Huntathon - Browse and submit Product Hunt Global Hackathon projects
FriendZone - Make new friends based on your interests and hobbies
CoFoundersLab - Meet 250,000+ entrepreneurs online
AiryCam - Look good in every photo
Confs.tech - Open source list of tech conferences: JS / Ruby / Data etc.
Open Camera - Open Camera is an open-source camera app for Android phones and tablets.