Idea Hunt - Solve specific challenges for your favorite products
Flare by GoDaddy - Discover, give feedback and support startup ideas
Idealist - Volunteer, work, and intern job search
Wittycircle - Networking tool for entrepreneurs, makers and curious minds.
OpenVC - 2200+ VC firms by thesis to find 'best fit' for your startup
Pitchstack - Become an armchair VC and judge the pitches of the day