Dafny vs Rocq
Dafny
dafny.org
Rocq
rocq-prover.orgSide by side
| Figure | Dafny | Rocq |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 0 | 1 |
| Spec score · Formal Verification Tools | 7.8 (#16) | 8.5 (#3) |
| Intended users | The project describes Dafny as used in academia for teaching and research and in industry, including by teams at Amazon. | The Rocq Platform is intended for developing and teaching with Rocq, and the site describes Rocq as used in mathematics, computer science, and related areas. |
| License | The Dafny software is licensed under the MIT License. | The Rocq Prover is distributed under the GNU Lesser General Public Licence Version 2.1 (LGPL). |
| Purpose | It helps developers write code that can be verified against specifications to reduce the risk of late-stage bugs. | Rocq Prover is an interactive theorem prover and proof assistant for developing mathematical proofs, formal specifications, programs and proofs that programs meet specifications. |
| Support | The project homepage directs users to a Zulip channel to ask questions about Dafny. | Users can report installation trouble or extension bugs in the dedicated Rocq Zulip stream. |
| What it does | Dafny is a verification-aware programming language with native support for recording specifications and a static program verifier that checks code against them. | Rocq is an interactive theorem prover for developing mathematical proofs and formal specifications, including proofs that programs meet their specifications. |
Plans
In their own words
Rocq
Rocq is a free interactive theorem prover and proof assistant for building mathematical proofs, formal specifications and programs, including proofs that programs meet specifications. Its Gallina language supports specification and mathematical work and is based on the Polymorphic, Cumulative Calculus of Inductive Constructions. A relatively small certification kernel machine-checks proofs. Rocq also offers interactive proof methods, decision and semi-decision algorithms, and a tactic language for defining methods. Certified programs can be extracted to OCaml, Haskell or Scheme, and the system can connect with external computer algebra systems or theorem provers. The Rocq Platform bundles the core prover with libraries and plugins for development and teaching. Its scripts install Rocq and packages on macOS, Windows and many Linux distributions; precompiled installers are available for macOS and Windows, but not Linux. Editor options include the VsRocq Visual Studio Code extension, RocqIDE, Proof General and Coqtail. Rocq is written in OCaml and distributed under the GNU Lesser General Public Licence Version 2.1.