Idea Hunt - Solve specific challenges for your favorite products
AreYouInterested - A super-simple landing page builder for bulk idea validation
Idealist - Volunteer, work, and intern job search
Slap Kirk - Just slap kirk
OpenVC - 2200+ VC firms by thesis to find 'best fit' for your startup
GenIdea - Ever wanted to brainstorm ideas in some specific fields but lacked the energy?