It'd be nice to run Sauce tests with purely free software.
The current SC license doesn't even seem to allow binary redistribution?
"You may copy and install the number of copies of Software you indicated to Sauce Labs at the time of download. You may also make one copy of the Software for back-up and archival purposes."
To run SC tests from Travis I've been using several node.js wrappers for SC (currently https://www.npmjs.com/package/sauce-tunnel) most of which include the binaries or the .jar. The community helps you by packaging SC in more convenient forms, but is in legal limbo whether it's actually OK :-(