Board for Github - A webview based GitHub project app with native features
GitNews Web - Trending repositories from GitHub, HackerNews & Reddit
Elegantt for Trello - The most elegant way to manage your Trello projects
LibHunt - LibHunt tracks mentions of software libraries on relevant social networks. Based on that data, you can find the most popular projects and their alternatives.
Trailer - Accelerate your GitHub workflow
Ruby Toolbox - Explore and compare open source Ruby libraries