Foundler - Online hackathon weekends. Attend every other week.
Y Combinator Co-founder Matching - YC’s free online platform to help you find your co-founder
CoFoundersLab - Meet 250,000+ entrepreneurs online
Find A Maker - find a partner for your next project
Ship That Shit - Join 3 no BS events to help you ship that shit
Founders Nation - Find or become a startup cofounder