Find A Maker - find a partner for your next project
Idea Hunt - Solve specific challenges for your favorite products
CoFoundersLab - Meet 250,000+ entrepreneurs online
Idealist - Volunteer, work, and intern job search
Y Combinator Co-founder Matching - YC’s free online platform to help you find your co-founder
OpenVC - 2200+ VC firms by thesis to find 'best fit' for your startup