DotHabit - DotHabit is an app that enables you to create daily goals to help you in building good habits and get rid of bad habits.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
CoreOS Rocket - App Container runtime (Docker alternative)
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Checky - How many times a day do you check your phone?
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.