GoodUI Evidence - People's A/B test results that show which UI ideas work best
UI Movement - The best UI design inspiration, daily
Decidr - Make better decisions with quick A/B polls
Muzli - UI/UX and Design Inspiration Chrome Extension
PreFlight - Preflight is an Automated Web Testing tool. Allows everyone to automate Web UI tests.
UI Jar - Hand-picked design inspiration for your real life projects