# Proof Technologies Ltd

Proof Technologies specialise in cutting-edge mathematical proof software for
use in mathematics and the formal verification of computer hardware/software.
We also provide consultancy in safety-critical software development and
functional programming.

## HOL Zero

We produce the open source HOL Zero
theorem prover. This has a $100 bounty reward for soundness flaws!

## HOL Light Tactic Proof Refactoring

We produce the open source Tactician, a utility for refactoring HOL Light tactic proof scripts.

## HOL Glossary

We have written an extensive glossary of
HOL-related terminology. This covers the basic concepts required to
understand the HOL logic and its implementation in theorem provers.

## Contact us

Please e-mail
info@proof-technologies.com with any general queries.