Finmark - Financial planning software for startups
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Poindexter - The easiest way to create financial projections for new business ideas. Quickly determine the profitability of your strategy without using Excel.
Cloudify - Accelerating Software Development & Deployment
Pry Financials - Finance for Founders
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.