Ganimede is completely free software published under the GNU Lesser General Public License, you should receive a copy of this document within the distribution if you didn't you can read the latest version of the license on GNU - Free Software Foundation web site.

Whatever, Ganimede uses Progress Software Corporation products that should be licensed, not any progress executables or binary code is distributed with Ganimede.
You can check the PSC product license policy with your PSC Product Representative.

If you want to recompile the source code you'll need development licenses - ProVision suite for progress 4GL code, and any of your favorite C compiler for the C part of the code.

Ganimede broker and agents are progress sessions running in batch so based on current PSC license policy they don't count as a 'real users'. You should have a number of license greater or equal with the maximum between the number of 'active connection' and the number of batch process - still make sure you consult PSC Product Representative on this matter.*



* - In '_license' table Ganimede's agents count as 'batch connection'; this is only true if you run the broker on the same machine as database server (self-service client).