AbTest.io - A free url shortener with A/B testing features
The Best Designs - Featuring the best of web design.
GoodUI Evidence - People's A/B test results that show which UI ideas work best
Attractive.AI - Attractive's bot Poe uses technology similar to self-driving cars to be able to navigate through a site's key functions.
PreFlight - Preflight is an Automated Web Testing tool. Allows everyone to automate Web UI tests.
DesignMunk - Landing Page Inspirations