Startup Stash - A curated directory of 400 resources & tools for startups
Invision - Prototyping and collaboration for design teams
StartupResources.io - Tightly curated lists of the best startup tools
Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.
SuccessValley - SuccessValley is an online Network Community focus on cultivating and sustaining a Network Community for students and aspiring entrepreneurs.
Craftwork - A collection of User Interface resources made by Craftwork