UXsniff - Track user behavior on your website and improve conversions with UXsniff: the user experience watchdog that looks out for you.
GoodUI Evidence - People's A/B test results that show which UI ideas work best
Rage Grade by FullStory - Benchmark your customer frustration
Decidr - Make better decisions with quick A/B polls
Toole - Search for and discover online tools
PreFlight - Preflight is an Automated Web Testing tool. Allows everyone to automate Web UI tests.