Rocq review
A free, kernel-checked theorem prover with dependent types, automation, and certified extraction.
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
Rocq is an open-source interactive theorem prover and dependently typed programming language for mathematical formalisation, education, research, and verified software development. It lets users define programs, predicates, mathematical objects, theorems, and software specifications in Gallina and related Rocq vernacular commands. Proofs are developed interactively with tactics, while a small certification kernel machine-checks the resulting proof terms. Rocq supports Windows, macOS, and Linux through self-hosted deployment.
Its strongest technical distinction is the connection between formal proof and certified software. Rocq supports the Calculus of Inductive Constructions, dependently typed functional programming with Gallina, and decision and semi-decision procedures for proof automation. Once programs are formally specified and proved, the system can extract certified programs to OCaml, Haskell, and Scheme. Extensible notation, typeclass, plugin, and tactic mechanisms give projects room to shape their proof development environment. The standalone RocqIDE and integrations for VS Code, VS Codium, Emacs, Vim/Neovim, Docker, and opam broaden its fit across common development workflows.
Rocq is distributed as free software under LGPL 2.1, with no commercial pricing tiers. That makes it suited to teams, researchers, educators, and individual developers seeking a full theorem-proving system without a paid plan structure. Its focus is deliberate: buyers looking for deductive verification, theorem proving, proof artifacts, and certified program extraction should find the feature set aligned with that work. Organizations seeking a hosted service, a different formalism, or a broader commercial platform should consider alternatives instead.
Questions about Rocq
What does Rocq run on? Windows, macOS and Linux. It runs self-hosted and as a desktop app.
What does Rocq integrate with? 6 integrations, including VS Code, VS Codium, Emacs, Vim/Neovim and Docker.
Who is Rocq built for? Solo users, small businesses, mid-market companies and enterprises (our editorial estimate).
Rocq pros and cons
- Where it wins
- Kernel machine-checks proof terms through a small certification kernel
- Extracts certified programs to OCaml, Haskell, and Scheme
- Supports RocqIDE, major editors, Docker, and opam
- Where it doesn't
- Focused on theorem proving rather than broader verification formalisms
- Self-hosted deployment requires managing the local environment
- No commercial pricing tiers or vendor-hosted plan options
Rocq fact sheet, pricing and score →
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