We have a similar problem at 99designs and recently open-sourced the work-distribution framework we use: https://github.com/99designs/testcloud https://github.

We have a similar problem at 99designs and recently open-sourced the work-distribution framework we use: https://github.com/99designs/testcloud https://github.com/99designs/testcloud The difficult part (that is not included in testcloud) is synchronizing the codebase that you are testing on the different workers. We use git and post-receive hooks to synchronize. Aggregating coverage data from the distributed workers is another major TODO for us, would love to hear how Box are handling it.