Founders Nation - Find or become a startup cofounder
Ferly - Helping you lead a confident & connected sex life
CoFoundersLab - Meet 250,000+ entrepreneurs online
Co-founder Question Cards - Questions to ask your co-founder to know each other better.
Onevest - We cut the noise from startup investing
Y Combinator Co-founder Matching - YC’s free online platform to help you find your co-founder