BetaList - BetaList provides an overview of upcoming internet startups. Discover and get early access to the future.
Product Hunt - A website that lets users share and discover new products
Betatesters.io - The platform connecting mobile developers and beta testers
Indie Worldwide - Virtual events with indie founders from around the world
Beta Family - 50,000 testers to test your app
Indie Hackers - Connect with fellow entrepreneurs, developers, and bootstrappers who are sharing the strategies and revenue numbers behind their companies.