Deputy - Deputy is a software for employee scheduling, time and attendance and communication management.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
When I Work - When I Work is an employee scheduling and communication app using the web, mobile apps, text messaging, social media, and email.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Planday - Employee scheduling, time tracking & absence management
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.