SocialRank - Graph search for TWTR. Filter by interests, location, etc
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Accountanalysis - A tool to evaluate Twitter accounts
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Flock - A faster way for your team to communicate
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.