diff --git a/.gitignore b/.gitignore
index 8bb069994..0e321ab34 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,6 +14,7 @@ packages/database.sqlite
 packages/database/src/database.sqlite
 src/Tempest/database.sqlite
 tests/Fixtures/database.sqlite
+tests/Fixtures/database*.sqlite
 tests/Unit/Console/test-console.log
 src/Tempest/Database/src/database.sqlite
 .env
diff --git a/composer.json b/composer.json
index e7188b507..c091cd01a 100644
--- a/composer.json
+++ b/composer.json
@@ -87,7 +87,8 @@
         "tempest/blade": "dev-main",
         "thenetworg/oauth2-azure": "^2.2",
         "twig/twig": "^3.16",
-        "wohali/oauth2-discord-new": "^1.2"
+        "wohali/oauth2-discord-new": "^1.2",
+        "brianium/paratest": "^7.14"
     },
     "replace": {
         "tempest/auth": "self.version",
diff --git a/packages/container/src/HasInstance.php b/packages/container/src/HasInstance.php
index 3f4b6b60f..7edfdeef3 100644
--- a/packages/container/src/HasInstance.php
+++ b/packages/container/src/HasInstance.php
@@ -6,14 +6,14 @@
 
 trait HasInstance
 {
-    private static self $instance;
+    private static ?self $instance = null;
 
     public static function instance(): ?self
     {
         return self::$instance ?? null;
     }
 
-    public static function setInstance(self $instance): void
+    public static function setInstance(?self $instance): void
     {
         self::$instance = $instance;
     }
diff --git a/src/Tempest/Framework/Testing/IntegrationTest.php b/src/Tempest/Framework/Testing/IntegrationTest.php
index d664e6d7c..08ea0e93d 100644
--- a/src/Tempest/Framework/Testing/IntegrationTest.php
+++ b/src/Tempest/Framework/Testing/IntegrationTest.php
@@ -36,6 +36,7 @@
 use Tempest\Storage\Testing\StorageTester;
 use Throwable;
 
+use function Tempest\env;
 use function Tempest\Support\Path\normalize;
 use function Tempest\Support\Path\to_absolute_path;
 
@@ -46,6 +47,8 @@ abstract class IntegrationTest extends TestCase
 {
     protected string $root;
 
+    protected string $internalStorage;
+
     /** @var \Tempest\Discovery\DiscoveryLocation[] */
     protected array $discoveryLocations = [];
 
@@ -110,12 +113,14 @@ protected function setupKernel(): self
     {
         // We force forward slashes for consistency even on Windows.
         $this->root ??= normalize(realpath(getcwd()));
+        $this->internalStorage = $this->root . '/.tempest/test_internal_storage/' . env('TEST_TOKEN', 'default');
 
         $discoveryLocations = [...$this->discoveryLocations, ...$this->discoverTestLocations()];
 
         $this->kernel ??= FrameworkKernel::boot(
             root: $this->root,
             discoveryLocations: $discoveryLocations,
+            internalStorage: $this->internalStorage,
         );
 
         /** @var GenericContainer $container */
@@ -234,6 +239,8 @@ protected function tearDown(): void
         unset($this->http);
         /** @phpstan-ignore-next-line */
         unset($this->oauth);
+
+        GenericContainer::setInstance(null);
     }
 
     protected function assertException(string $expectedExceptionClass, Closure $handler, ?Closure $assertException = null, ?string $message = null): void
diff --git a/tests/Fixtures/Config/database.sqlite.php b/tests/Fixtures/Config/database.sqlite.php
index c72626b54..b46dcbd6f 100644
--- a/tests/Fixtures/Config/database.sqlite.php
+++ b/tests/Fixtures/Config/database.sqlite.php
@@ -4,6 +4,8 @@
 
 use Tempest\Database\Config\SQLiteConfig;
 
+use function Tempest\env;
+
 return new SQLiteConfig(
-    path: __DIR__ . '/../database.sqlite',
+    path: __DIR__ . '/../database' . env('TEST_TOKEN', 'default') . '.sqlite',
 );
diff --git a/tests/Integration/Console/Commands/MakeCommandCommandTest.php b/tests/Integration/Console/Commands/MakeCommandCommandTest.php
index 511480532..2e55cb52e 100644
--- a/tests/Integration/Console/Commands/MakeCommandCommandTest.php
+++ b/tests/Integration/Console/Commands/MakeCommandCommandTest.php
@@ -19,8 +19,8 @@ protected function setUp(): void
         parent::setUp();
 
         $this->installer->configure(
-            __DIR__ . '/install',
-            new Psr4Namespace('App\\', __DIR__ . '/install/App'),
+            $this->internalStorage . '/install',
+            new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
         );
     }
 
diff --git a/tests/Integration/Console/Commands/MakeConfigCommandTest.php b/tests/Integration/Console/Commands/MakeConfigCommandTest.php
index 2fadbfa77..0f0766b34 100644
--- a/tests/Integration/Console/Commands/MakeConfigCommandTest.php
+++ b/tests/Integration/Console/Commands/MakeConfigCommandTest.php
@@ -30,8 +30,8 @@ protected function setUp(): void
         parent::setUp();
 
         $this->installer->configure(
-            __DIR__ . '/install',
-            new Psr4Namespace('App\\', __DIR__ . '/install/App'),
+            $this->internalStorage . '/install',
+            new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
         );
     }
 
diff --git a/tests/Integration/Console/Commands/MakeGeneratorCommandCommandTest.php b/tests/Integration/Console/Commands/MakeGeneratorCommandCommandTest.php
index 55e8bf4f7..427d83dfc 100644
--- a/tests/Integration/Console/Commands/MakeGeneratorCommandCommandTest.php
+++ b/tests/Integration/Console/Commands/MakeGeneratorCommandCommandTest.php
@@ -19,8 +19,8 @@ protected function setUp(): void
         parent::setUp();
 
         $this->installer->configure(
-            __DIR__ . '/install',
-            new Psr4Namespace('App\\', __DIR__ . '/install/App'),
+            $this->internalStorage . '/install',
+            new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
         );
     }
 
diff --git a/tests/Integration/Console/Commands/MakeMiddlewareCommandTest.php b/tests/Integration/Console/Commands/MakeMiddlewareCommandTest.php
index 26a13130a..2c84475c4 100644
--- a/tests/Integration/Console/Commands/MakeMiddlewareCommandTest.php
+++ b/tests/Integration/Console/Commands/MakeMiddlewareCommandTest.php
@@ -22,8 +22,8 @@ protected function setUp(): void
         parent::setUp();
 
         $this->installer->configure(
-            __DIR__ . '/install',
-            new Psr4Namespace('App\\', __DIR__ . '/install/App'),
+            $this->internalStorage . '/install',
+            new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
         );
     }
 
diff --git a/tests/Integration/Console/Installer/ConsoleInstallerTest.php b/tests/Integration/Console/Installer/ConsoleInstallerTest.php
index 6e785922c..36ab895da 100644
--- a/tests/Integration/Console/Installer/ConsoleInstallerTest.php
+++ b/tests/Integration/Console/Installer/ConsoleInstallerTest.php
@@ -18,10 +18,10 @@ protected function setUp(): void
 
         $this->installer
             ->configure(
-                __DIR__ . '/install',
-                new Psr4Namespace('App\\', __DIR__ . '/install/App'),
+                $this->internalStorage . '/install',
+                new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
             )
-            ->setRoot(__DIR__ . '/install');
+            ->setRoot($this->internalStorage . '/install');
     }
 
     protected function tearDown(): void
diff --git a/tests/Integration/Container/Commands/MakeInitializerCommandTest.php b/tests/Integration/Container/Commands/MakeInitializerCommandTest.php
index 52a4387db..70a0a5066 100644
--- a/tests/Integration/Container/Commands/MakeInitializerCommandTest.php
+++ b/tests/Integration/Container/Commands/MakeInitializerCommandTest.php
@@ -19,8 +19,8 @@ protected function setUp(): void
         parent::setUp();
 
         $this->installer->configure(
-            __DIR__ . '/install',
-            new Psr4Namespace('App\\', __DIR__ . '/install/App'),
+            $this->internalStorage . '/install',
+            new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
         );
     }
 
diff --git a/tests/Integration/Core/FrameworkInstallerTest.php b/tests/Integration/Core/FrameworkInstallerTest.php
index b567744d9..5a15f28d8 100644
--- a/tests/Integration/Core/FrameworkInstallerTest.php
+++ b/tests/Integration/Core/FrameworkInstallerTest.php
@@ -18,10 +18,10 @@ protected function setUp(): void
 
         $this->installer
             ->configure(
-                __DIR__ . '/install',
-                new Psr4Namespace('App\\', __DIR__ . '/install/App'),
+                $this->internalStorage . '/install',
+                new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
             )
-            ->setRoot(__DIR__ . '/install');
+            ->setRoot($this->internalStorage . '/install');
     }
 
     protected function tearDown(): void
diff --git a/tests/Integration/Core/InstallCommandTest.php b/tests/Integration/Core/InstallCommandTest.php
index 80aab3c7d..f6622a270 100644
--- a/tests/Integration/Core/InstallCommandTest.php
+++ b/tests/Integration/Core/InstallCommandTest.php
@@ -18,10 +18,10 @@ protected function setUp(): void
 
         $this->installer
             ->configure(
-                __DIR__ . '/install',
-                new Psr4Namespace('App\\', __DIR__ . '/install/App'),
+                $this->internalStorage . '/install',
+                new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
             )
-            ->setRoot(__DIR__ . '/install');
+            ->setRoot($this->internalStorage . '/install');
     }
 
     protected function tearDown(): void
diff --git a/tests/Integration/Core/PublishesFilesTest.php b/tests/Integration/Core/PublishesFilesTest.php
index 7d5cddf09..d1611ed34 100644
--- a/tests/Integration/Core/PublishesFilesTest.php
+++ b/tests/Integration/Core/PublishesFilesTest.php
@@ -23,8 +23,8 @@ protected function setUp(): void
         parent::setUp();
 
         $this->installer->configure(
-            __DIR__ . '/install',
-            new Psr4Namespace('App\\', __DIR__ . '/install/App'),
+            $this->internalStorage . '/install',
+            new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
         );
     }
 
diff --git a/tests/Integration/Core/ViewComponentsInstallerTest.php b/tests/Integration/Core/ViewComponentsInstallerTest.php
index 1ea9f9fb8..4283033a7 100644
--- a/tests/Integration/Core/ViewComponentsInstallerTest.php
+++ b/tests/Integration/Core/ViewComponentsInstallerTest.php
@@ -19,10 +19,10 @@ protected function setUp(): void
 
         $this->installer
             ->configure(
-                __DIR__ . '/install',
-                new Psr4Namespace('App\\', __DIR__ . '/install/App'),
+                $this->internalStorage . '/install',
+                new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
             )
-            ->setRoot(__DIR__ . '/install');
+            ->setRoot($this->internalStorage . '/install');
 
         $this->registerViewComponent(
             name: 'x-vendor-a',
diff --git a/tests/Integration/Cryptography/GenerateSigningKeyCommandTest.php b/tests/Integration/Cryptography/GenerateSigningKeyCommandTest.php
index 56b83ac06..51dac06a6 100644
--- a/tests/Integration/Cryptography/GenerateSigningKeyCommandTest.php
+++ b/tests/Integration/Cryptography/GenerateSigningKeyCommandTest.php
@@ -21,9 +21,9 @@ protected function setUp(): void
 
     protected function tearDown(): void
     {
-        parent::tearDown();
-
         Filesystem\delete_file(root_path('.env'));
+
+        parent::tearDown();
     }
 
     public function test_creates_dot_env(): void
diff --git a/tests/Integration/Database/Commands/MakeMigrationCommandTest.php b/tests/Integration/Database/Commands/MakeMigrationCommandTest.php
index decafef87..846727422 100644
--- a/tests/Integration/Database/Commands/MakeMigrationCommandTest.php
+++ b/tests/Integration/Database/Commands/MakeMigrationCommandTest.php
@@ -20,7 +20,10 @@ final class MakeMigrationCommandTest extends FrameworkIntegrationTestCase
     #[PreCondition]
     protected function configure(): void
     {
-        $this->installer->configure(__DIR__ . '/install', new Psr4Namespace('App\\', __DIR__ . '/install/App'));
+        $this->installer->configure(
+            $this->internalStorage . '/install',
+            new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
+        );
     }
 
     #[PostCondition]
diff --git a/tests/Integration/Database/Commands/MakeModelCommandTest.php b/tests/Integration/Database/Commands/MakeModelCommandTest.php
index bbad4d192..0f1d4b72b 100644
--- a/tests/Integration/Database/Commands/MakeModelCommandTest.php
+++ b/tests/Integration/Database/Commands/MakeModelCommandTest.php
@@ -19,8 +19,8 @@ protected function setUp(): void
         parent::setUp();
 
         $this->installer->configure(
-            __DIR__ . '/install',
-            new Psr4Namespace('App\\', __DIR__ . '/install/App'),
+            $this->internalStorage . '/install',
+            new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
         );
     }
 
diff --git a/tests/Integration/Database/DatabaseConfigTest.php b/tests/Integration/Database/DatabaseConfigTest.php
index 3a1d16a74..c6e985e1d 100644
--- a/tests/Integration/Database/DatabaseConfigTest.php
+++ b/tests/Integration/Database/DatabaseConfigTest.php
@@ -23,7 +23,7 @@ final class DatabaseConfigTest extends FrameworkIntegrationTestCase
     public function test_strategy_is_taken_into_account(string $strategy, string $expected): void
     {
         $this->container->config(new SQLiteConfig(
-            path: __DIR__ . '/../database.sqlite',
+            path: $this->internalStorage . '/../database.sqlite',
             namingStrategy: new $strategy(),
         ));
 
diff --git a/tests/Integration/Database/MultiDatabaseTest.php b/tests/Integration/Database/MultiDatabaseTest.php
index 4c9d48b91..4ae4a94b3 100644
--- a/tests/Integration/Database/MultiDatabaseTest.php
+++ b/tests/Integration/Database/MultiDatabaseTest.php
@@ -42,8 +42,8 @@ protected function setUp(): void
         }
 
         $files = [
-            __DIR__ . '/db-main.sqlite',
-            __DIR__ . '/db-backup.sqlite',
+            $this->internalStorage . '/db-main.sqlite',
+            $this->internalStorage . '/db-backup.sqlite',
         ];
 
         foreach ($files as $file) {
@@ -58,12 +58,12 @@ protected function setUp(): void
         $this->container->addInitializer(DatabaseInitializer::class);
 
         $this->container->config(new SQLiteConfig(
-            path: __DIR__ . '/db-main.sqlite',
+            path: $this->internalStorage . '/db-main.sqlite',
             tag: 'main',
         ));
 
         $this->container->config(new SQLiteConfig(
-            path: __DIR__ . '/db-backup.sqlite',
+            path: $this->internalStorage . '/db-backup.sqlite',
             tag: 'backup',
         ));
     }
diff --git a/tests/Integration/Discovery/Commands/MakeDiscoveryCommandTest.php b/tests/Integration/Discovery/Commands/MakeDiscoveryCommandTest.php
index 87e1ecd40..225c365de 100644
--- a/tests/Integration/Discovery/Commands/MakeDiscoveryCommandTest.php
+++ b/tests/Integration/Discovery/Commands/MakeDiscoveryCommandTest.php
@@ -19,8 +19,8 @@ protected function setUp(): void
         parent::setUp();
 
         $this->installer->configure(
-            __DIR__ . '/install',
-            new Psr4Namespace('App\\', __DIR__ . '/install/App'),
+            $this->internalStorage . '/install',
+            new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
         );
     }
 
diff --git a/tests/Integration/Http/DatabaseSessionInstallerTest.php b/tests/Integration/Http/DatabaseSessionInstallerTest.php
index f1eba3604..a085634ee 100644
--- a/tests/Integration/Http/DatabaseSessionInstallerTest.php
+++ b/tests/Integration/Http/DatabaseSessionInstallerTest.php
@@ -19,8 +19,8 @@ final class DatabaseSessionInstallerTest extends FrameworkIntegrationTestCase
     protected function configure(): void
     {
         $this->installer
-            ->configure(__DIR__ . '/install', new Psr4Namespace('App\\', __DIR__ . '/install/App'))
-            ->setRoot(__DIR__ . '/install');
+            ->configure($this->internalStorage . '/install', new Psr4Namespace('App\\', $this->internalStorage . '/install/App'))
+            ->setRoot($this->internalStorage . '/install');
     }
 
     #[PostCondition]
diff --git a/tests/Integration/Http/MakeControllerCommandTest.php b/tests/Integration/Http/MakeControllerCommandTest.php
index 2264c006d..36229d907 100644
--- a/tests/Integration/Http/MakeControllerCommandTest.php
+++ b/tests/Integration/Http/MakeControllerCommandTest.php
@@ -19,8 +19,8 @@ protected function setUp(): void
         parent::setUp();
 
         $this->installer->configure(
-            __DIR__ . '/install',
-            new Psr4Namespace('App\\', __DIR__ . '/install/App'),
+            $this->internalStorage . '/install',
+            new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
         );
     }
 
diff --git a/tests/Integration/Http/MakeRequestCommandTest.php b/tests/Integration/Http/MakeRequestCommandTest.php
index b53656368..5f5456d38 100644
--- a/tests/Integration/Http/MakeRequestCommandTest.php
+++ b/tests/Integration/Http/MakeRequestCommandTest.php
@@ -19,8 +19,8 @@ protected function setUp(): void
         parent::setUp();
 
         $this->installer->configure(
-            __DIR__ . '/install',
-            new Psr4Namespace('App\\', __DIR__ . '/install/App'),
+            $this->internalStorage . '/install',
+            new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
         );
     }
 
diff --git a/tests/Integration/Http/MakeResponseCommandTest.php b/tests/Integration/Http/MakeResponseCommandTest.php
index bf4f0cb43..c387c59f3 100644
--- a/tests/Integration/Http/MakeResponseCommandTest.php
+++ b/tests/Integration/Http/MakeResponseCommandTest.php
@@ -19,8 +19,8 @@ protected function setUp(): void
         parent::setUp();
 
         $this->installer->configure(
-            __DIR__ . '/install',
-            new Psr4Namespace('App\\', __DIR__ . '/install/App'),
+            $this->internalStorage . '/install',
+            new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
         );
     }
 
diff --git a/tests/Integration/View/Commands/MakeViewCommandTest.php b/tests/Integration/View/Commands/MakeViewCommandTest.php
index 348b3b2ae..e970d3946 100644
--- a/tests/Integration/View/Commands/MakeViewCommandTest.php
+++ b/tests/Integration/View/Commands/MakeViewCommandTest.php
@@ -18,8 +18,8 @@ protected function setUp(): void
         parent::setUp();
 
         $this->installer->configure(
-            __DIR__ . '/install',
-            new Psr4Namespace('App\\', __DIR__ . '/install/App'),
+            $this->internalStorage . '/install',
+            new Psr4Namespace('App\\', $this->internalStorage . '/install/App'),
         );
     }
 
diff --git a/tests/Integration/Vite/ViteInstallerTest.php b/tests/Integration/Vite/ViteInstallerTest.php
index 9c38f1c42..543df9672 100644
--- a/tests/Integration/Vite/ViteInstallerTest.php
+++ b/tests/Integration/Vite/ViteInstallerTest.php
@@ -14,12 +14,15 @@ final class ViteInstallerTest extends FrameworkIntegrationTestCase
     #[PreCondition]
     protected function configure(): void
     {
-        $this->installer->configure(__DIR__ . '/install', new Psr4Namespace('App\\', __DIR__ . '/install/app'));
+        $this->installer->configure(
+            $this->internalStorage . '/install',
+            new Psr4Namespace('App\\', $this->internalStorage . '/install/app'),
+        );
 
-        mkdir(__DIR__ . '/install/node_modules');
+        mkdir($this->internalStorage . '/install/node_modules');
 
         // force usage of npm because bun will mutate Tempest's root install otherwise
-        touch(__DIR__ . '/install/package-lock.json');
+        touch($this->internalStorage . '/install/package-lock.json');
     }
 
     #[After]
diff --git a/tests/Integration/Vite/ViteTest.php b/tests/Integration/Vite/ViteTest.php
index a7c7bbb43..9fcceb0cf 100644
--- a/tests/Integration/Vite/ViteTest.php
+++ b/tests/Integration/Vite/ViteTest.php
@@ -23,7 +23,7 @@ protected function setUp(): void
     {
         parent::setUp();
 
-        $this->vite->setRootDirectory(__DIR__ . '/Fixtures/tmp');
+        $this->vite->setRootDirectory($this->internalStorage . '/Fixtures/tmp');
     }
 
     public function test_set_nonce(): void