GoodUI Evidence - People's A/B test results that show which UI ideas work best
Change Politics - Elections by the people
Decidr - Make better decisions with quick A/B polls
Burst - Burst has thousands of hi-res photos that are free to use.
PreFlight - Preflight is an Automated Web Testing tool. Allows everyone to automate Web UI tests.
Field the Bern - Canvassing app built by volunteers, absorbed by campaign