Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
One Month iOS - Learn to build your first iPhone app in just one month
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Sjabloon - Rails SaaS starter kit (just $79 one-time)
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
Py - Learn to code on the go 📱