After reviewing many continuous integration services below, there is no doubt that Wercker is the winner. The Wercker Box (virtual container) is based on Ubuntu and any packages can be easily installed with “apt-get”. This flexibility basically allows running any test suites and deploying to any cloud platforms. Furthermore, a Wercker Box can inherit from another box and can be stored and published in Wercker directories as the starting point for any projects, increasing the performance significantly.


Open source friendly:

Has free plan:

No fee plan: