diff --git a/app/Console/Commands/GenerateLicenseKeysCommand.php b/app/Console/Commands/GenerateLicenseKeysCommand.php
new file mode 100644
index 0000000..059272b
--- /dev/null
+++ b/app/Console/Commands/GenerateLicenseKeysCommand.php
@@ -0,0 +1,55 @@
+<?php
+
+namespace App\Console\Commands;
+
+use Illuminate\Console\Command;
+use Illuminate\Support\Facades\Storage;
+
+class GenerateLicenseKeysCommand extends Command
+{
+    protected $signature = 'license:generate-keys {--force : Overwrite existing key pair}';
+
+    protected $description = 'Generate a new application-wide license signing key pair.';
+
+    public function handle(): int
+    {
+        $directory = 'license-keys';
+        $privateKeyPath = $directory . '/private.pem';
+        $publicKeyPath = $directory . '/public.pem';
+        $disk = Storage::disk('local');
+
+        $privateExists = $disk->exists($privateKeyPath);
+        $publicExists = $disk->exists($publicKeyPath);
+
+        if (($privateExists || $publicExists) && !$this->option('force')) {
+            $this->error('Key pair already exists. Use --force to overwrite.');
+            return 1;
+        }
+
+        $keyPair = $this->generateKeyPair();
+        $disk->put($privateKeyPath, $keyPair['privateKey']);
+        $disk->put($publicKeyPath, $keyPair['publicKey']);
+
+        $this->info('Generated application license key pair.');
+        $this->line('Private key: ' . $privateKeyPath);
+        $this->line('Public key: ' . $publicKeyPath);
+
+        return 0;
+    }
+
+    protected function generateKeyPair(): array
+    {
+        $privateKey = openssl_pkey_new([
+            'private_key_bits' => 2048,
+            'private_key_type' => OPENSSL_KEYTYPE_RSA,
+        ]);
+
+        openssl_pkey_export($privateKey, $privateKeyPem);
+        $publicKeyDetails = openssl_pkey_get_details($privateKey);
+
+        return [
+            'privateKey' => $privateKeyPem,
+            'publicKey' => $publicKeyDetails['key'],
+        ];
+    }
+}
diff --git a/app/Console/Kernel.php b/app/Console/Kernel.php
index 1c0a981..dcc6f1d 100644
--- a/app/Console/Kernel.php
+++ b/app/Console/Kernel.php
@@ -15,6 +15,7 @@ class Kernel extends ConsoleKernel
     protected $commands = [
         \App\Console\Commands\CaldavSyncCommand::class,
         \App\Console\Commands\CheckInvoiceDueDatesCommand::class,
+        \App\Console\Commands\GenerateLicenseKeysCommand::class,
     ];
 
     /**
diff --git a/app/Http/Controllers/InvoiceController.php b/app/Http/Controllers/InvoiceController.php
index 6a6d6f9..baddf93 100644
--- a/app/Http/Controllers/InvoiceController.php
+++ b/app/Http/Controllers/InvoiceController.php
@@ -541,7 +541,7 @@ public function store(Request $request)
         }
     }
 
-    public function update(Request $request, $id)
+    public function update(Request $request, int $id)
     {
         // Validate input data (expecting camelCase)
         $validatedData = $request->validate([
diff --git a/app/Http/Controllers/LicenseController.php b/app/Http/Controllers/LicenseController.php
new file mode 100644
index 0000000..bc73e9e
--- /dev/null
+++ b/app/Http/Controllers/LicenseController.php
@@ -0,0 +1,341 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\License;
+use App\Support\ApiDataTransformer;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Storage;
+use Inertia\Inertia;
+
+class LicenseController extends Controller
+{
+    /**
+     * Display a listing of the resource.
+     *
+     * Retrieves all licenses from the database, ordered by expiration date.
+     *
+     * @return array
+     */
+    public function index()
+    {
+        $licenses = License::orderBy('expirationDate', 'asc')->get();
+        return ApiDataTransformer::snakeToCamel($licenses->toArray());
+    }
+
+    /**
+     * Display the specified resource.
+     *
+     * Retrieves a single license by its ID.
+     *
+     * @param int $id The ID of the license to retrieve
+     * @return array
+     */
+    public function single($id)
+    {
+        $license = License::findOrFail($id);
+        return ApiDataTransformer::snakeToCamel($license->toArray());
+    }
+
+    /**
+     * Display the specified resource.
+     *
+     * Renders the Inertia view for licenses
+     *
+     * @return \Inertia\Response
+     */
+    public function show()
+    {
+        return Inertia::render(
+            'Licenses',
+            ['licenseData' => $this->index()]
+        );
+    }
+
+    /**
+     * Get the directory path for license keys.
+     *
+     * @return string
+     */
+    protected function licenseKeyDirectory(): string
+    {
+        return 'license-keys';
+    }
+
+    /**
+     * Get the path for the private key file.
+     *
+     * @return string
+     */
+    protected function privateKeyPath(): string
+    {
+        return $this->licenseKeyDirectory() . '/private.pem';
+    }
+
+    /**
+     * Get the path for the public key file.
+     *
+     * @return string
+     */
+    protected function publicKeyPath(): string
+    {
+        return $this->licenseKeyDirectory() . '/public.pem';
+    }
+
+    /**
+     * Get the application's key pair.
+     *
+     * @return array
+     */
+    protected function getApplicationKeyPair(): array
+    {
+        if (!Storage::disk('local')->exists($this->privateKeyPath()) || !Storage::disk('local')->exists($this->publicKeyPath())) {
+            abort(500, 'Application license key pair is missing. Generate it with `php artisan license:generate-keys`.');
+        }
+
+        return [
+            'privateKey' => Storage::disk('local')->get($this->privateKeyPath()),
+            'publicKey' => Storage::disk('local')->get($this->publicKeyPath()),
+        ];
+    }
+
+    /**
+     * Generate a signature for the license data.
+     *
+     * Uses the private key to sign the data.
+     *
+     * @param array $licenseData The license data to sign
+     * @param string $privateKey The private key to use for signing
+     * @return string
+     */
+    protected function generateSignature($licenseData, $privateKey)
+    {
+        $licenseJson = json_encode($licenseData);
+        if ($licenseJson === false) throw new \Exception('Fehler beim JSON-Encode der Lizenzdaten: ' . json_last_error_msg());
+
+        $success = openssl_sign($licenseJson, $signature, $privateKey, OPENSSL_ALGO_SHA256);
+        if ($success === false) throw new \Exception('Fehler beim Signieren der Lizenzdaten: ' . openssl_error_string());
+
+        return base64_encode($signature);
+    }
+
+    /**
+     * Store a newly created resource in storage.
+     *
+     * Validates the request data, generates a signature, and creates a new license.
+     *
+     * @param \Illuminate\Http\Request $request The HTTP request containing license data
+     * @return array
+     */
+    public function store(Request $request)
+    {
+        // Validate the request data
+        $validatedData = $request->validate([
+            'name' => 'required|string',
+            'email' => 'required|email',
+            'product' => 'required|string',
+            'version' => 'required|string',
+            'isPerpetual' => 'required|boolean',
+            'expirationDate' => 'nullable|date',
+        ]);
+
+        // Convert camelCase to snake_case
+        $snakeCaseData = ApiDataTransformer::camelToSnake($validatedData);
+
+
+        $keyPair = $this->getApplicationKeyPair();
+
+        $licenseData = [
+            'name' => $snakeCaseData['name'],
+            'email' => $snakeCaseData['email'],
+            'product' => $snakeCaseData['product'],
+            'version' => $snakeCaseData['version'],
+            'is_perpetual' => $snakeCaseData['is_perpetual'],
+            'expiration_date' => $snakeCaseData['expiration_date'],
+        ];
+
+        $signature = $this->generateSignature($licenseData, $keyPair['privateKey']);
+
+        $license = License::create([
+            'name' => $snakeCaseData['name'],
+            'email' => $snakeCaseData['email'],
+            'product' => $snakeCaseData['product'],
+            'version' => $snakeCaseData['version'],
+            'is_perpetual' => $snakeCaseData['is_perpetual'],
+            'expiration_date' => $snakeCaseData['expiration_date'],
+            'signature' => $signature,
+        ]);
+
+        return ApiDataTransformer::snakeToCamel($license->toArray());
+    }
+
+    /**
+     * Validate the license signature and expiration date.
+     *
+     * The validation logic should be portable to other languages.
+     *
+     * @param \Illuminate\Http\Request $request The HTTP request containing the license ID
+     * @return array
+     */
+    public function validate(Request $request)
+    {
+        // Get the license ID from the request
+        $licenseId = $request->input('license_id');
+
+        // Find the license
+        $license = License::findOrFail($licenseId);
+
+        $publicKey = Storage::disk('local')->get($this->publicKeyPath());
+
+        $licenseData = [
+            'name' => $license->name,
+            'email' => $license->email,
+            'product' => $license->product,
+            'version' => $license->version,
+            'is_perpetual' => $license->is_perpetual,
+            'expiration_date' => $license->expiration_date,
+        ];
+
+        // Convert the license data to JSON
+        $licenseJson = json_encode($licenseData);
+
+        // Verify the signature
+        $signature = base64_decode($license->signature);
+        $isSignatureValid = openssl_verify($licenseJson, $signature, $publicKey, OPENSSL_ALGO_SHA256);
+
+        // Check the expiration date if the license is not perpetual
+        $isExpired = false;
+        if (!$license->is_perpetual && $license->expiration_date) {
+            $isExpired = now()->gt($license->expiration_date);
+        }
+
+        // Return the validation result
+        return [
+            'is_valid' => $isSignatureValid === 1 && !$isExpired,
+            'is_signature_valid' => $isSignatureValid === 1,
+            'is_expired' => $isExpired,
+        ];
+    }
+
+    /**
+     * Download the license as a JSON file.
+     *
+     * @param int $id The ID of the license to download
+     * @return \Symfony\Component\HttpFoundation\StreamedResponse
+     */
+    public function download(int $id)
+    {
+        // Find the license
+        $license = License::findOrFail($id);
+
+        // Prepare the license data for download
+        $licenseData = [
+            'name' => $license->name,
+            'email' => $license->email,
+            'product' => $license->product,
+            'version' => $license->version,
+            'is_perpetual' => $license->is_perpetual,
+            'expiration_date' => $license->expiration_date,
+            'signature' => $license->signature,
+        ];
+
+        // Convert the license data to JSON
+        $licenseJson = json_encode($licenseData, JSON_PRETTY_PRINT);
+
+        // Create a response with the JSON file
+        $response = response($licenseJson, 200, [
+            'Content-Type' => 'application/json',
+            'Content-Disposition' => 'attachment; filename="' . $licenseData['product'] . '.json"',
+        ]);
+
+        return $response;
+    }
+
+    /**
+     * Update the specified resource in storage.
+     *
+     * Validates the request data, generates a new signature, and updates the license.
+     *
+     * @param \Illuminate\Http\Request $request The HTTP request containing updated license data
+     * @param int $id The ID of the license to update
+     * @return array|\Illuminate\Http\JsonResponse
+     */
+    public function update(Request $request, int $id)
+    {
+        // Validate the request data
+        $validatedData = $request->validate([
+            'name' => 'required|string',
+            'email' => 'required|email',
+            'product' => 'required|string',
+            'version' => 'required|string',
+            'isPerpetual' => 'required|boolean',
+            'expirationDate' => 'nullable|date',
+        ]);
+
+        // Convert camelCase to snake_case
+        $snakeCaseData = ApiDataTransformer::camelToSnake($validatedData);
+
+        DB::beginTransaction();
+
+        try {
+            // Find license
+            $license = License::findOrFail($id);
+
+            // Retrieve the private key for the license
+            $privateKey = $this->getApplicationKeyPair()['privateKey'];
+
+            // Generate the license data
+            $licenseData = [
+                'name' => $snakeCaseData['name'],
+                'email' => $snakeCaseData['email'],
+                'product' => $snakeCaseData['product'],
+                'version' => $snakeCaseData['version'],
+                'is_perpetual' => $snakeCaseData['is_perpetual'],
+                'expiration_date' => $snakeCaseData['expiration_date'],
+            ];
+
+            // Generate the signature
+            $signature = $this->generateSignature($licenseData, $privateKey);
+
+            // Update the license
+            $license->update([
+                'name' => $snakeCaseData['name'],
+                'email' => $snakeCaseData['email'],
+                'product' => $snakeCaseData['product'],
+                'version' => $snakeCaseData['version'],
+                'is_perpetual' => $snakeCaseData['is_perpetual'],
+                'expiration_date' => $snakeCaseData['expiration_date'],
+                'signature' => $signature,
+            ]);
+
+            DB::commit();
+
+            // Return the updated license
+            return ApiDataTransformer::snakeToCamel($license->toArray());
+        } catch (\Exception $e) {
+            DB::rollBack();
+            return response()->json([
+                'message' => 'Lizenz konnte nicht aktualisiert werden',
+                'error' => $e->getMessage()
+            ], 500);
+        }
+    }
+
+    /**
+     * Remove the specified resource from storage.
+     *
+     * Deletes the specified license from the database.
+     *
+     * @param int $id The ID of the license to delete
+     * @return \Illuminate\Http\JsonResponse
+     */
+    public function destroy(int $id)
+    {
+        $license = License::findOrFail($id);
+        $license->delete();
+        return response()->json([
+            'message' => 'Lizenz erfolgreich gelöscht'
+        ]);
+    }
+}
diff --git a/app/Models/License.php b/app/Models/License.php
new file mode 100644
index 0000000..3e3d8de
--- /dev/null
+++ b/app/Models/License.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+
+class License extends Model
+{
+    /** @use HasFactory<\Database\Factories\LicenseFactory> */
+    use HasFactory;
+
+    protected $fillable = [
+        'name',
+        'email',
+        'product',
+        'version',
+        'is_perpetual',
+        'expiration_date',
+        'signature'
+    ];
+
+    protected $casts = [
+        'is_perpetual' => 'boolean',
+        'expiration_date' => 'datetime'
+    ];
+}
diff --git a/database/factories/LicenseFactory.php b/database/factories/LicenseFactory.php
new file mode 100644
index 0000000..dd6608d
--- /dev/null
+++ b/database/factories/LicenseFactory.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace Database\Factories;
+
+use Illuminate\Database\Eloquent\Factories\Factory;
+use App\Models\License;
+
+class LicenseFactory extends Factory
+{
+    protected $model = License::class;
+
+    public function definition()
+    {
+        return [
+            'name' => $this->faker->name(),
+            'email' => $this->faker->safeEmail(),
+            'product' => "Tooloop Guide",
+            'version' => $this->faker->semver(),
+            'is_perpetual' => rand(0, 10) > 7,
+            'expiration_date' => $this->faker->dateTimeThisDecade(),
+            'signature' => $this->faker->sha256()
+        ];
+    }
+}
diff --git a/database/migrations/2026_05_25_142250_create_licenses_table.php b/database/migrations/2026_05_25_142250_create_licenses_table.php
new file mode 100644
index 0000000..ed28ffa
--- /dev/null
+++ b/database/migrations/2026_05_25_142250_create_licenses_table.php
@@ -0,0 +1,34 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('licenses', function (Blueprint $table) {
+            $table->id();
+            $table->string('name');
+            $table->string('email');
+            $table->string('product');
+            $table->string('version');
+            $table->boolean('is_perpetual');
+            $table->string('expiration_date')->nullable();;
+            $table->string('signature');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('licenses');
+    }
+};
diff --git a/database/seeders/DatabaseSeeder.php b/database/seeders/DatabaseSeeder.php
index b3a6fbe..30de5df 100644
--- a/database/seeders/DatabaseSeeder.php
+++ b/database/seeders/DatabaseSeeder.php
@@ -22,6 +22,7 @@ public function run(): void
             SettingsTableSeeder::class,
             TodoTypeSeeder::class,
             UnitSeeder::class,
+            LicenseSeeder::class,
         ]);
 
         $user = User::factory()->create([
diff --git a/database/seeders/LicenseSeeder.php b/database/seeders/LicenseSeeder.php
new file mode 100644
index 0000000..a7cf076
--- /dev/null
+++ b/database/seeders/LicenseSeeder.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace Database\Seeders;
+
+use Illuminate\Database\Seeder;
+use App\Models\License;
+
+class LicenseSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     */
+    public function run(): void
+    {
+        License::factory()->count(10)->create();
+    }
+}
\ No newline at end of file
diff --git a/resources/js/components/AppSidebar.vue b/resources/js/components/AppSidebar.vue
index fd31ac7..b25e594 100644
--- a/resources/js/components/AppSidebar.vue
+++ b/resources/js/components/AppSidebar.vue
@@ -3,12 +3,12 @@ import NavFooter from '@/components/NavFooter.vue';
 import NavMain from '@/components/NavMain.vue';
 import { Sidebar, SidebarContent, SidebarFooter, SidebarHeader, SidebarTrigger } from '@/components/ui/crm-sidebar';
 import { useSidebar } from '@/components/ui/crm-sidebar/utils'
-import { dashboard, pipeline, offers, invoices, newInvoice, products, timesheets, customers, leads, achievements } from '@/routes';
+import { dashboard, pipeline, licenses, offers, invoices, newInvoice, products, timesheets, customers, leads, achievements } from '@/routes';
 import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from '@/components/ui/tooltip'
 import { Kbd, KbdGroup } from '@/components/ui/kbd'
 import { type NavGroup } from '@/types';
 import { Link, usePage } from '@inertiajs/vue3';
-import { Kanban, Euro, Trophy, Calculator, Timer, ContactRound, Headset, Plus, Package } from 'lucide-vue-next';
+import { Kanban, Euro, Trophy, Calculator, Timer, ContactRound, Headset, Plus, Package, FileBadge } from 'lucide-vue-next';
 import AppLogo from './AppLogo.vue';
 import { computed } from 'vue';
 
@@ -66,6 +66,11 @@ const mainNavGroups: NavGroup[] = [
                 href: products(),
                 icon: Package,
             },
+            {
+                title: 'Lizenzen',
+                href: licenses(),
+                icon: FileBadge,
+            },
             {
                 title: 'Zeiterfassung',
                 href: timesheets(),
diff --git a/resources/js/components/ui/crm-badge/index.ts b/resources/js/components/ui/crm-badge/index.ts
index fe746af..b1908f2 100644
--- a/resources/js/components/ui/crm-badge/index.ts
+++ b/resources/js/components/ui/crm-badge/index.ts
@@ -14,6 +14,8 @@ export const badgeVariants = cva(
           "border-transparent bg-secondary text-secondary-foreground [a&]:hover:bg-secondary/90",
         destructive:
           "border-transparent bg-destructive text-destructive-foreground [a&]:hover:bg-destructive/90 focus-visible:ring-destructive/20 dark:focus-visible:ring-destructive/40 dark:bg-destructive/60",
+        success:
+          "border-transparent bg-success text-success-foreground [a&]:hover:bg-success/90 focus-visible:ring-success/20 dark:focus-visible:ring-success/40 dark:bg-success/60",
         warning:
           "border-transparent bg-warning text-warning-foreground [a&]:hover:bg-warning/90 focus-visible:ring-warning/20 dark:focus-visible:ring-warning/40 dark:bg-warning/60",
         outline:
diff --git a/resources/js/pages/Licenses.vue b/resources/js/pages/Licenses.vue
new file mode 100644
index 0000000..a4ccbce
--- /dev/null
+++ b/resources/js/pages/Licenses.vue
@@ -0,0 +1,180 @@
+<script setup lang="ts">
+import { License } from '@/types'
+import { toLocalDate } from '@/lib/utils'
+import Fuse from 'fuse.js'
+import { onMounted, ref, computed } from 'vue'
+import AppLayout from '@/layouts/AppLayout.vue'
+import AppHeader from '@/components/AppHeader.vue'
+import { Head } from '@inertiajs/vue3'
+import { Table, TableRow, TableBody, TableCell, TableFooter, TableHead, TableHeader } from '@/components/ui/crm-table'
+import { Input } from '@/components/ui/crm-input'
+import { Badge } from '@/components/ui/crm-badge'
+import Button from '@/components/ui/crm-button/Button.vue'
+import { ButtonGroup } from '@/components/ui/button-group'
+import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from '@/components/ui/tooltip'
+import { Kbd, KbdGroup } from '@/components/ui/kbd'
+import LicenseService from '@/services/LicenseService';
+import { Check, Download, Trash2, Plus, Delete, Search } from 'lucide-vue-next'
+import { alertStore } from "@/stores/alertStore"
+import { toast } from 'vue-sonner';
+
+interface Props {
+    licenseData: License[]
+}
+const props = defineProps<Props>()
+const licenses = ref([] as License[])
+const searchQuery = ref('')
+const searchField = ref()
+const alert = alertStore()
+
+onMounted(() => {
+    licenses.value = props.licenseData
+})
+
+const fuse = computed(() => {
+    return new Fuse(props.licenseData, {
+        keys: ['name', 'email', 'product', 'version'],
+        threshold: 0.3
+    })
+})
+
+const filteredLicenses = computed(() => {
+
+    let licenses = props.licenseData
+
+    // Filter by search query
+    if (searchQuery.value) {
+        licenses = fuse.value.search(searchQuery.value).map(result => result.item)
+    }
+
+    return licenses
+})
+
+const downloadLicense = (id: number) => {
+    window.open('/licenses/download/' + id)
+}
+
+const deleteLicense = (id: number) => {
+    alert.show(
+        "Möchtest Du diese Lizenz wirklich löschen?",
+        null,
+        {
+            actionText: "Löschen",
+            actionVariant: "destructive",
+            onAction: async () => {
+                LicenseService.deleteLicense(id).then(() => {
+                    licenses.value = licenses.value.filter(license => license.id != id)
+                }).catch((error) => {
+                    toast.error('Fehler beim Löschen der Lizenz', { duration: 5000, description: error.message })
+                })
+            }
+        }
+    )
+}
+
+</script>
+
+<template>
+
+    <Head title="Lizenzen" />
+
+    <AppLayout title="Lizenzen">
+
+        <!-- Header functions -->
+        <AppHeader>
+            <template #left>
+            </template>
+
+            <template #middle>
+                <!-- Search field -->
+                <Input ref="search-field" id="search" type="text" placeholder="Filtern" class="px-8 bg-background"
+                    v-model="searchQuery" />
+                <span class="absolute start-0 inset-y-0 flex items-center justify-center px-2">
+                    <Search class="size-4 text-muted-foreground" />
+                </span>
+                <span class="absolute end-0 inset-y-0 flex items-center justify-center px-0 mr-1">
+                    <Button :size="'sm'" :variant="'ghost'" @click="searchQuery = ''; searchField.focus();">
+                        <Delete class="size-4 text-muted-foreground" />
+                    </Button>
+                </span>
+            </template>
+            <template #right>
+                <!-- New button -->
+                <TooltipProvider>
+                    <Tooltip>
+                        <TooltipTrigger>
+                            <Button @click="">
+                                <Plus />
+                                Neu
+                            </Button>
+                        </TooltipTrigger>
+                        <TooltipContent>
+                            <span>Neue Lizenz anlegen</span>
+                            <KbdGroup class="ml-2">
+                                <Kbd class="visible-mac">⌘ N</Kbd>
+                                <Kbd class="visible-pc">Ctrl N</Kbd>
+                            </KbdGroup>
+                        </TooltipContent>
+                    </Tooltip>
+                </TooltipProvider>
+            </template>
+        </AppHeader>
+
+        <!-- License table -->
+        <Table>
+            <TableHeader>
+                <TableRow>
+                    <TableHead class="w-1/100 text-center">Gültig bis</TableHead>
+                    <TableHead>Produkt</TableHead>
+                    <TableHead>Version</TableHead>
+                    <TableHead colspan="2">Lizenznehmer</TableHead>
+                    <TableHead class="w-1/100 print:hidden"></TableHead>
+                </TableRow>
+            </TableHeader>
+
+            <TableBody>
+
+                <TableRow v-for="license in filteredLicenses" :key="license.id">
+                    <TableCell class="text-center">
+                        <!-- <Check class="text-success inline-block" /> -->
+                        <Badge v-if="license.isPerpetual" variant="secondary">
+                            Permanent
+                        </Badge>
+                        <Badge v-else-if="Math.random() > 0.5" variant="success">
+                            {{ toLocalDate(license.expirationDate || '') }}
+                        </Badge>
+                        <Badge v-else variant="destructive">
+                            {{ toLocalDate(license.expirationDate || '') }}
+                        </Badge>
+                    </TableCell>
+                    <TableCell>
+                        {{ license.product }}
+                    </TableCell>
+                    <TableCell>
+                        {{ license.version }}
+                    </TableCell>
+
+                    <TableCell>
+                        {{ license.name }}<br />
+                    </TableCell>
+                    <TableCell>
+                        <a :href="'mailto:' + license.email + '?subject=Ihre ' + license.product + '-Lizenz'"
+                            class="text-muted-foreground text-sm">{{ license.email
+                            }}</a>
+                    </TableCell>
+
+                    <TableCell class="print:hidden">
+                        <ButtonGroup>
+                            <Button size="icon" variant="ghost" @click="downloadLicense(license.id)">
+                                <Download class="text-muted-foreground" />
+                            </Button>
+                            <Button size="icon" variant="ghost" @click="deleteLicense(license.id)">
+                                <Trash2 class="text-muted-foreground" />
+                            </Button>
+                        </ButtonGroup>
+                    </TableCell>
+                </TableRow>
+            </TableBody>
+        </Table>
+    </AppLayout>
+</template>
diff --git a/resources/js/services/LicenseService.ts b/resources/js/services/LicenseService.ts
new file mode 100644
index 0000000..503e7e5
--- /dev/null
+++ b/resources/js/services/LicenseService.ts
@@ -0,0 +1,126 @@
+import axios, { AxiosError } from 'axios';
+import { License } from '@/types';
+import { toast } from 'vue-sonner';
+
+const API_URL = '/api/licenses';
+
+export default {
+    /**
+     * Fetches all licenses
+     * @returns Promise<License[] | null>
+     */
+    async getLicenses(): Promise<License[] | null> {
+        try {
+            const response = await axios.get(API_URL);
+            return response.data;
+        } catch (error) {
+            toast.error('Fehler beim Abrufen der Lizenzen', { description: (error as AxiosError).message });
+            console.error(error);
+            return null;
+        }
+    },
+
+    /**
+     * Fetches a single license by ID
+     * @param id - The ID of the license to fetch
+     * @returns Promise<License | null>
+     */
+    async getLicense(id: number): Promise<License | null> {
+        try {
+            const response = await axios.get(`${API_URL}/${id}`);
+            return response.data;
+        } catch (error) {
+            toast.error('Fehler beim Abrufen der Lizenz', { description: (error as AxiosError).message });
+            console.error(error);
+            return null;
+        }
+    },
+
+    /**
+     * Creates a new license
+     * @param license - The license data to create
+     * @returns Promise<License | null>
+     */
+    async createLicense(license: License): Promise<License | null> {
+        try {
+            const response = await axios.post(API_URL, license);
+            return response.data;
+        } catch (error) {
+            toast.error('Fehler beim Erstellen der Lizenz', { description: (error as AxiosError).message });
+            console.error(error);
+            return null;
+        }
+    },
+
+    /**
+     * Updates an existing license
+     * @param license - The license data to update
+     * @returns Promise<License | null>
+     */
+    async updateLicense(license: License): Promise<License | null> {
+        try {
+            const response = await axios.put(`${API_URL}/${license.id}`, license);
+            return response.data;
+        } catch (error) {
+            toast.error('Fehler beim Aktualisieren der Lizenz', { description: (error as AxiosError).message });
+            console.error(error);
+            return null;
+        }
+    },
+
+    /**
+     * Deletes a license by ID
+     * @param id - The ID of the license to delete
+     * @returns Promise<boolean>
+     */
+    async deleteLicense(id: number): Promise<boolean> {
+        try {
+            await axios.delete(`${API_URL}/${id}`);
+            return true;
+        } catch (error) {
+            toast.error('Fehler beim Löschen der Lizenz', { description: (error as AxiosError).message });
+            console.error(error);
+            return false;
+        }
+    },
+
+    /**
+     * Downloads a license as a JSON file
+     * @param id - The ID of the license to download
+     * @returns Promise<void>
+     */
+    async downloadLicense(id: number): Promise<void> {
+        try {
+            const response = await axios.get(`/licenses/download/${id}`, {
+                responseType: 'blob',
+            });
+
+            const url = window.URL.createObjectURL(new Blob([response.data]));
+            const link = document.createElement('a');
+            link.href = url;
+            link.setAttribute('download', `license_${id}.json`);
+            document.body.appendChild(link);
+            link.click();
+            link.remove();
+        } catch (error) {
+            toast.error('Fehler beim Herunterladen der Lizenz', { description: (error as AxiosError).message });
+            console.error(error);
+        }
+    },
+
+    /**
+     * Validates a license
+     * @param licenseId - The ID of the license to validate
+     * @returns Promise<{ is_valid: boolean, is_signature_valid: boolean, is_expired: boolean } | null>
+     */
+    async validateLicense(licenseId: number): Promise<{ is_valid: boolean, is_signature_valid: boolean, is_expired: boolean } | null> {
+        try {
+            const response = await axios.post('/api/licenses/validate', { license_id: licenseId });
+            return response.data;
+        } catch (error) {
+            toast.error('Fehler beim Validieren der Lizenz', { description: (error as AxiosError).message });
+            console.error(error);
+            return null;
+        }
+    }
+};
\ No newline at end of file
diff --git a/resources/js/types/index.d.ts b/resources/js/types/index.d.ts
index 72997f9..6037cf2 100644
--- a/resources/js/types/index.d.ts
+++ b/resources/js/types/index.d.ts
@@ -289,6 +289,34 @@ export function newBillingData() {
     }
 }
 
+export interface License {
+    id: number;
+    name: string;
+    email: string;
+    product: string;
+    version: string;
+    isPerpetual: boolean;
+    expirationDate: string | null;
+    signature: string;
+    createdAt: string;
+    updatedAt: string;
+}
+
+export function newLicense(): License {
+    return {
+        id: 0,
+        name: '',
+        email: '',
+        product: '',
+        version: '',
+        isPerpetual: false,
+        expirationDate: null,
+        signature: '',
+        createdAt: new Date().toISOString(),
+        updatedAt: new Date().toISOString()
+    };
+}
+
 export interface LineItem {
     id: number,
     invoiceId: number,
@@ -411,7 +439,6 @@ export function newProduct(): Product {
     }
 }
 
-
 // Pipeline item used by CRM pipeline
 export interface PipelineItem {
     id: number;
diff --git a/routes/api.php b/routes/api.php
index 1527cf8..0f40343 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -2,19 +2,20 @@
 
 use Illuminate\Support\Facades\Route;
 use App\Http\Controllers\CustomerController;
-use App\Http\Controllers\NoteController;
 use App\Http\Controllers\InvoiceController;
+use App\Http\Controllers\LicenseController;
 use App\Http\Controllers\LineItemController;
+use App\Http\Controllers\NoteController;
 use App\Http\Controllers\PaymentTermsController;
+use App\Http\Controllers\PipelineController;
+use App\Http\Controllers\PipelineItemController;
 use App\Http\Controllers\ProductController;
 use App\Http\Controllers\SettingController;
+use App\Http\Controllers\TimesheetController;
+use App\Http\Controllers\TimesheetEntryController;
 use App\Http\Controllers\TodoController;
 use App\Http\Controllers\UnitController;
 use App\Mail\OrderConfirmation;
-use App\Http\Controllers\TimesheetController;
-use App\Http\Controllers\TimesheetEntryController;
-use App\Http\Controllers\PipelineController;
-use App\Http\Controllers\PipelineItemController;
 
 Route::get('/pipeline', [PipelineController::class, 'index']);
 Route::post('/pipeline/positions', [PipelineController::class, 'updatePositions']);
@@ -55,6 +56,12 @@
 Route::delete('/invoices/{id}', [InvoiceController::class, 'delete']);
 Route::get('/invoices/{id}/remind', [InvoiceController::class, 'remind']);
 
+Route::get('/licenses', [\App\Http\Controllers\LicenseController::class, 'index']);
+Route::get('/licenses/{id}', [\App\Http\Controllers\LicenseController::class, 'single']);
+Route::delete('/licenses/{id}', [\App\Http\Controllers\LicenseController::class, 'destroy']);
+Route::post('/licenses', [\App\Http\Controllers\LicenseController::class, 'store']);
+Route::put('/licenses/{id}', [\App\Http\Controllers\LicenseController::class, 'update']);
+
 Route::get('/lineitems/{invoiceId}', [LineItemController::class, 'index']);
 Route::post('/lineitems/import', [LineItemController::class, 'importFromCsv']);
 
diff --git a/routes/web.php b/routes/web.php
index 8272cca..6b88aa1 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -11,6 +11,7 @@
 use App\Http\Controllers\ProductController;
 use App\Http\Controllers\TimesheetController;
 use App\Http\Controllers\PipelineController;
+use App\Http\Controllers\LicenseController;
 
 Route::middleware('auth')->group(function () {
 
@@ -49,6 +50,10 @@
     Route::get('invoice/{id}/pdf', [InvoiceController::class, 'exportPdf'])->name('invoiceExportPdf');
     Route::get('invoice/{id}/xml', [InvoiceController::class, 'exportXml'])->name('invoiceExportXml');
 
+    // Licenses
+    Route::get('licenses', [LicenseController::class, 'show'])->name('licenses');
+    Route::get('licenses/download/{id}', [LicenseController::class, 'download'])->name('downloadLicense');
+
     // Products
     Route::get('products', [ProductController::class, 'show'])->name('products');