Very easy to install: https://github.com/c9/core https://github.com/c9/core It's completely open source. License allows non-commercial use, if you want to be

Very easy to install: https://github.com/c9/core https://github.com/c9/core It's completely open source. License allows non-commercial use, if you want to be completely legit and use this for commercial purposes, you need to get in touch with them or use the hosted version.