RainforestQA - Insanely simple testing. Create tests for your website in plain English, then run them across all major browsers with a single click. Powered by human intelligence
AbTest.io - A free url shortener with A/B testing features
TestRail - TestRail provides comprehensive test case management for software testing. Organize your testing, boost productivity, get real-time insights, and track progress toward milestones. Integrates with leading issue tracking and test automation tools.
GoodUI Evidence - People's A/B test results that show which UI ideas work best
Cypress.io - Slow, difficult and unreliable testing for anything that runs in a browser. Install Cypress in seconds and take the pain out of front-end testing.
PreFlight - Preflight is an Automated Web Testing tool. Allows everyone to automate Web UI tests.