Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Semaphore (software)
open-in-new
<p>Semaphore is a hosted <a href="/facts/Continuous_integration/M4RYgSzt">continuous integration</a> and <a href="/facts/Continuous_deployment/oUo2tdtF">deployment</a> service used for testing and deploying software projects hosted on GitHub and BitBucket. </p><p>While open source projects can use Semaphore for free in its full capacity, free use for private projects is limited to 100 builds per month (Semaphore Classic) or $20 of service every month (Semaphore 2.0). </p><p>One of Semaphore’s features is native <a href="/facts/Docker_(software)/7IvvsMug">Docker</a> support, which enables testing and deploying Docker-based applications. Semaphore also offers Boosters, a feature that reduces the duration of running a test suite to that of the longest test through automatic parallelization of builds for <a href="/facts/Ruby_(programming_language)/BeYSaPSR">Ruby</a> projects. </p>