Mattermark - Ranking 800,000+ high growth Internet companies
BetaList - BetaList provides an overview of upcoming internet startups. Discover and get early access to the future.
Breakout List - A list of the fastest growing startups
Product Hunt - A website that lets users share and discover new products
Signum Startup Tracker - Cookie-free precise targeting based on AI content analysis
PitchWall - Browse new startups, and submit your mobile app/games startup's beta page here.