Startup Stash - A curated directory of 400 resources & tools for startups
SyntaxDB - Easily look up programming syntax for multiple languages
StartupResources.io - Tightly curated lists of the best startup tools
Learn X in Y minutes - LearnXinYminutes isn’t a good way to learn your first programming language, but it’s a great way to...
Founded X Startup Stats - Find the best country to build your startup in
GitHub Visualizer - Enter user/repo and see the project visually