TwoDatabase is copyright of the respective authors, and is available under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 license, except where explicitly stated otherwise.
Licenses and their meaning can be scary at times but rest assured the Creative Commons licenses are simple, precise, and beneficial for us, and you, too!
You may share our code with the world! This including copying, distribution, and transmission of our work. No hidden fees here, we want you to enjoy what we provide, and the more, the merrier.
But what would content be worth if it could not be used to create new stuff? Not much. We think so, too, and thus you may remix our content. Wait, what is remixing? That does sound a whole lot like music or video stuff! No, silly! Remixing describes that you may build upon our content, adapt it for your needs, and build new content out of it.
Everyone wants to be appreciated, and so do we! If you make use of the rights we give to you, we expect attribution from you. This is pretty simple: you have to make clear, who authored the work we did for you. A suggestion is that if you use a copyright or licence header for every file, to include attribution there, e.g. "based upon the code of the-coppermine.com". You may include further details, bot no less than that.
Now here is an important rule: do not make money by using our work! We provide this content only for non-commercial use. If you desire to use our content for commercial purposes, you may contact us for a commercial license.
The final of your duties is the central rule for us: if you alter, transform, or build upon this work, you have to distribute the resulting work only under the *same or similar license to this one. Why? Because using our work, and hiding your remixes is just bad. Nobody will benefit from that. Again, if you desire to do something with our work, and not release your remixes, you may ask us for a commercial license.