Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Slinky - Your slack links — organized!
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
Obie.ai - Access knowledge quicker without leaving Slack
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.