Envisage - Inject contextual help on your site. Point and click style.
BetaList - BetaList provides an overview of upcoming internet startups. Discover and get early access to the future.
Codesign.io - Visual feedback on everything
Product Hunt - A website that lets users share and discover new products
Product Fit - Measure product/market fit in app with your users.
Betatesters.io - The platform connecting mobile developers and beta testers