Best Tampermonkey Alternatives in 2026
Chrome's extension purge broke half the userscript managers people still recommend. Here's what runs today on Chrome, Firefox, and Safari, and how to pick between them.
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Tweeks Blog
Guides and comparisons for customizing websites with userscripts, plus engineering notes from the team building Tweeks.
Tweeks vs. Tampermonkey: Which Userscript Manager Fits You?
Tweeks is a full userscript manager that also writes new scripts from your description. It imports .user.js files and runs Greasy Fork scripts with the usual GM_* APIs. Here's how that compares with Tampermonkey.
Email Automations From Any Website With TW_email
Use TW_email in tweeks to send yourself website-triggered email alerts, reports, reminders, and workflow notifications.
Fixing Intermittent Auth Failures in Chrome Manifest V3
The fix was architectural: IndexedDB as canonical auth state, read-time refresh, and serialized refresh to prevent token-rotation races in Manifest V3.