HANDE is an efficient, highly parallel code for stochastic quantum chemistry. It can be used both as a standalone program or (optionally) as a library from an existing quantum chemistry code. For a description of its main features see J. Chem. Theory Comput. 2019, 15, 3, 1728-1742.
There is a HANDE users mailing list where you can ask questions and get announcements of releases. See https://groups.google.com/g/hande-user where you can view any posts and sign up.
Extensive documentation (including tutorials) can be found under the documentation subdirectory and on readthedocs.
Except where otherwise stated, HANDE is under the 'Lesser GNU Public License v2.1'.
(Note that many bundled libraries, including dSFMT, aotus and pyblock are under a different licence. Please see the licence information in the relevant subdirectory for more details).
Note that this licence does not apply prior to HANDE 0.9.