Codefield - Tools for developers, designers and photographers
Repokémon - Showcase of GitHub repos with Pokémon names
LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
GitHub Repository Size - Browser extension to show file and repo size in GitHub
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
Charte - Free online interactive charts for non-techies