Basil Chat - Design feedback via chat
AbTest.io - A free url shortener with A/B testing features
Planogy - A feedback platform for all the creative work
GoodUI Evidence - People's A/B test results that show which UI ideas work best
Feedback by Pixelic - Painless design feedback and version control.
PreFlight - Preflight is an Automated Web Testing tool. Allows everyone to automate Web UI tests.