BetaList - BetaList provides an overview of upcoming internet startups. Discover and get early access to the future.
Viral Loops for Startups - Virality for startups made easy 💪
PitchWall - Browse new startups, and submit your mobile app/games startup's beta page here.
Startup Tracker - The startup search engine 🎯
StartupBase - Community of makers & early adopters
Mattermark - Ranking 800,000+ high growth Internet companies