Optimizely - A/B testing you'll actually use.
BucketListly - The most beautiful & advanced bucket list you will ever have
Evergage - Evergage's real time web personalization software can help you boost engagement, increase revenue and drive more conversions. Web personalization software that's easy to use.
Extension Boilerplate - Build cross browser extensions for Chrome, Firefox & Opera
Qubit - Qubit is a web personalization platform founded by former Google workers, using innovative technology to collect, store, process, and output data to optimize consumers' experiences on the web. Read more about Qubit.
YouTube Vanced - Vanced is a modded version of YouTube with many features such as adblocking and background playback