SmallDevTools - Handy developer tools with a delightful interface
Startup Stash - A curated directory of 400 resources & tools for startups
whatdevsneed - This is whatdevsneed.
StartupResources.io - Tightly curated lists of the best startup tools
Google Open Source - All of Googles open source projects under a single umbrella
Startup Collections - Resources & tools for entrepreneurs, designers & developers