Developers, now you have yet another help in a new website-type library. The Android Arsenal is a new categorized directory of Android-related projects that can help developers find what they are looking for much faster. The directory comprises Buttons, Changelogs, Caching, Color Pickers, Action Bars, Analytics and Advertisements among others, and it already has over 250 links to different projects.
Most libraries are open source projects that are hosted on Github or Google Project Hosting and you will find some paid and closed source projects as well. If developers find missing projects from the links they can submit original projects from Github themselves.