Scriptvault

ScriptVault is a modern, open-source userscript manager built on Chrome Manifest V3. It lets you install, manage, and run custom JavaScript userscripts on any website.

FEATURES

Full GM API (24+ functions)
Complete Greasemonkey and Tampermonkey API compatibility including GM_getValue, GM_setValue, GM_xmlhttpRequest, GM_addStyle, GM_notification, GM_download, GM_registerMenuCommand, and more. All functions also available as promise-based GM.* async variants.

Script Management
- Auto-detect and install scripts from any .user.js URL
- One-click enable/disable per script or globally
- Automatic update checking with configurable intervals
- Organize scripts with tags, search, and filters
- Quick-edit scripts directly from the toolbar popup

Advanced URL Matching
- Full @match, @include, @exclude, @exclude-match support
- User-defined pattern overrides without editing script code
- Per-pattern toggles for fine-grained control

Cloud Sync
Sync your scripts across devices with 5 providers: WebDAV, Google Drive, Dropbox, OneDrive, and Chrome's built-in sync.

Built-in Code Editor
- CodeMirror with JavaScript syntax highlighting
- 5 dark themes: Monokai, Dracula, Material Darker, Nord, Ayu Dark
- Code folding, bracket matching, search and replace
- Real-time userscript metadata linting

Security
- Scripts run in isolated USER_SCRIPT world
- Permission analysis on the installation page
- @connect domain validation for network requests
- Remote and manual blacklist system
- Zero telemetry — all data stays on your device

Import and Export
- Full backup and restore via ZIP or JSON
- Install scripts from URL or clipboard

Available in 8 languages: English, German, Spanish, French, Japanese, Portuguese, Russian, and Chinese.

Open source under the MIT license.