Y Combinator is an American seed accelerator launched in March 2005 and was used to launch over 2,000 companies including Dropbox, Airbnb, Stripe, Reddit, Optimizely, Zenefits, Docker, DoorDash, Mixpanel, Heroku.

Graysky is a third-party client for Blusky Social for iOS and Android which adds GIFs, inline translations, and hashtags with a layout that prioritizes your custom feeds. The first 3rd party client on the App Store!