Coq is a formal proof management system. It provides a formal language to write mathematical definitions, executable algorithms and theorems together with an environment for semi-interactive development of machine-checked proofs.
Download the pre-built packages of the latest release for Windows and macOS;
read the help page on how to install Coq with OPAM;
or refer to the INSTALL.md file for the procedure to install from source.
The sources of the documentation can be found in directory doc.
See doc/README.md to learn more about the documentation,
in particular how to build it. The
documentation of the last released version is available on the Coq
web site at coq.inria.fr/documentation.
See also Cocorico (the Coq wiki),
and the Coq FAQ,
for additional user-contributed documentation.
The documentation of the master branch is continuously deployed. See:
- Reference Manual (master)
- Documentation of the standard library (master)
- Documentation of the ML API (master)
The Recent changes chapter of the reference manual explains the differences and the incompatibilities of each new version of Coq. If you upgrade Coq, please read it carefully as it contains important advice on how to approach some problems you may encounter.
We have a number of channels to reach the user community and the development team:
- Our Discourse forum.
- Our mailing list, the Coq-Club.
- Our Gitter channel, which is a good way to reach developers for quick chat and development questions.
See also coq.inria.fr/community.
Please report any bug / feature request in our issue tracker.
To be effective, bug reports should mention the OCaml version used
to compile and run Coq, the Coq version (coqtop -v), the configuration
used, and include a complete source example leading to the bug.
Guidelines for contributing to Coq in various ways are listed in the contributor's guide.
Information about release plans is at https://github.com/coq/coq/wiki/Release-Plan
Help the Coq community grow and prosper by becoming a sponsor! The Coq Consortium can establish sponsorship contracts or receive donations. If you want to take an active role in shaping Coq's future, you can also become a Consortium member. If you are interested, please get in touch!