oddCMS is licensed under the Creative Commons Attribution-Noncommercial-Share Alike License (3.0, United States).
If you're interested in using or modifying oddCMS, please take a moment to look over what the license allows.
Note: the "non-commercial" clause applies only to the source code itself. You are perfectly free to use oddCMS on a for-profit website; you just can't sell the source code (or modifications thereof.)