The GUDHI library is a C++ library, with a Python interface (via Cython). It is available under either an Open Source license or under a commercial license.
The Open Source license
GUDHI is distributed under the GPLv3 license. This is a Copyleft license that gives the user the right to use, copy and modify the code freely for non-commercial purposes.
Note that any GUDHI-derived modules must be distributed under the GPLv3 license.
The commercial license
For lawful use of GUDHI in cases not covered by GPLv3 license please contact us to purchase a commercial license for the whole library or its parts.