Simple and powerful AB testing script
A lightweight, free, and open-source JavaScript library to create advanced experiments on your website.
Why Abrantes?
Completely Free
No paid plans, no add-ons. Abrantes is 100% free software that you can use for any purpose.
Open Source
Transparent and extensible. Licensed under GPL v3. Modify it to fit your exact needs.
Privacy Focused
Abrantes doesn't collect or store user data. It works with your existing analytics tools.
Unlimited
No limits on experiments, variants, users, or pageviews. Run as many tests as you want.
Performance First
Lightweight and optimized for speed. Minimizes the "flash of switching content".
Works with Your Tools
Seamlessly integrates with Google Tag Manager, Google Analytics, Microsoft Clarity, and more.
Integrates with your stack
Abrantes is designed to work with the tools you already use.
Google Tag Manager
Google Analytics
Microsoft Clarity
Matomo
Hotjar