StartupBase - Community of makers & early adopters
Product Hunt - A website that lets users share and discover new products
PitchWall - Browse new startups, and submit your mobile app/games startup's beta page here.
BetaList - BetaList provides an overview of upcoming internet startups. Discover and get early access to the future.
Startup Buffer - Startup Buffer is a premium startup directory for emerging startups all around the world.
Capterra - Capterra helps millions of people find the best business software. With software reviews, ratings, infographics, and the most comprehensive list of the top business software products available, you're sure to find what you need at Capterra.