We have listed 2 alternatives for Semaphore which have similar features like
Semaphore
including commercial, freemium, free and open source Mac OS X
alternatives.
Jenkins is a self-contained Java-based program, ready to run out-of-the-box, with packages for Windows, Mac OS X and other Unix-like operating systems.
Buildkite is a CI and build automation tool that combines the power of your own build infrastructure with the convenience of a managed, centralized web UI.