Foundler - Online hackathon weekends. Attend every other week.
CoFoundersLab - Meet 250,000+ entrepreneurs online
Confs.tech - Open source list of tech conferences: JS / Ruby / Data etc.
FounderWheel - Meet potential co-founders everyday
Project Board - Team up with a co-hacker for your project
Ha.ckathon - Find the right Hackathons for you!