Ask HN: Where to get a commercial software licence agreement?

Hi All, I know the MIT license and the GPL are great for "free" software projects. Is there a similar "free to use license" that is actually for commercially licensed projects? I'm about to start commercially licensing a side project and I'd like a license agreement that basically says I get X% of the revenue generated by said software, and that there is to be no modifying, de-compiling, reverse engineering or installing it on other systems without written approval. Is there a place where I can get such a written agreement?