BetaList - BetaList provides an overview of upcoming internet startups. Discover and get early access to the future.
Reachr - Find & Build relationships with Influencers
StartupBase - Community of makers & early adopters
SocialBlade - SocialBlade can help you track YouTube Channel Statistics, Twitch User Stats, Instagram Stats, and much more! You can compare yourself to other users and analyze your growth!
PitchWall - Browse new startups, and submit your mobile app/games startup's beta page here.
Xberts - Marketplace for creative products reviewed by influencers