Coverity Scan - Find and fix defects in your Java, C/C++ or C# open source project for free
Gwibber - Gwibber is an open source microblogging client for GNOME developed with Python and GTK.
SonarQube - SonarQube, a core component of the Sonar solution, is an open source, self-managed tool that systematically helps developers and organizations deliver Clean Code.
TweetDeck - TweetDeck is your personal browser for staying in touch with what’s happening now.
ReSharper - ReSharper is a productivity tool for visual studio that provides tools and features to help you manage your code.
Tweetbot - Sync your timeline across your iPhone, iPad, and Mac. Mute tweets by user, hashtag, tweet source, or keywords (including regex). 3rd Party support for image, video, read later, and timeline sync services.