Here are some:
https://github.com/facebook/Haxl - A Haskell library that simplifies access to remote data, such as databases or web-based services.
https://github.com/koalaman/shellcheck - ShellCheck, a static analysis tool for shell scripts
https://github.com/simonmichael/hledger - The hledger command-line and web-based accounting tool, a Haskell rewrite of ledger.
https://github.com/facebook/flow - Adds static typing to JavaScript to improve developer productivity and code quality.
https://github.com/coq/coq - 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.
In Show HN: Learn Functional Programming Using Haskellrocq-prover
rocq
OCaml2014–2026
rocq-prover / rocq
rocq
The Rocq Prover is an interactive theorem prover, or proof assistant. 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.
34Distinct people
44Mentions
1Explicit recommenders
5.7KGitHub stars
What to know before exploring
What it is
The Rocq Prover is an interactive theorem prover, or proof assistant. 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.
GitHub
Where it is used
No documented product use was verified in the last source check.
What people are saying
I recently learned about some limitations in both Coq and Lean theorem prover after watching the video by Kevin Buzzard on formalization of math in Lean. He did some claims…
xvilka used a recommendation phrase. One indexed comment matches. This is a phrase match, not a verdict.
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Also in these discussions
- bcpierce00/unison · linked in 2 of the same discussions
- meta/flow · linked in 2 of the same discussions
- semgrep/semgrep · linked in 2 of the same discussions
Mentioned in the same Hacker News threads. That is not proof they are substitutes.
This week on Hacker News
Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 8:03:49 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year44 dated mentions
Observed mentions: 2014-09-07 23:44:29 UTC to 2026-09-05 14:42:29 UTC.
* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2014 | 2014-01-01 00:00:00 UTC | 2015-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2015 | 2015-01-01 00:00:00 UTC | 2016-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 2 | 0 | 2 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 8 | 2 | 6 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 5 | 1 | 4 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 13 | 1 | 12 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 4 | 0 | 4 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 6 | 0 | 6 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2026 (partial) | 2026-01-01 00:00:00 UTC | 2027-01-01 00:00:00 UTC | 2 | 0 | 2 |
From the project README
An excerpt from the repository, fetched Nov 13, 2026.
Read the project’s introduction
The Rocq Prover
The Rocq Prover is an interactive theorem prover, or proof assistant. 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.
Installation
Please see https://rocq-prover.org/install.
Information on how to build and install from sources can be found in
INSTALL.md.
Documentation
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 Rocq
web site at rocq-prover.org/docs.
See also the Rocq wiki,
and the Rocq 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)
Changes
The Recent
changes chapter
of the reference manual explains the differences and the
incompatibilities of each new version of the Rocq Prover. If you upgrade Rocq,
please read it carefully as it contains important advice on how to
approach some problems you may encounter.
Questions and discussion
We have a number of channels to reach the user community and the
development team:
Our Zulip chat, for casual and high traffic discussions.
Our Discourse forum, for more structured and easily browsable discussions and Q&A.
See also rocq-prover.org/community, which
lists several other active platforms.
Bug reports
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 Rocq, the Rocq version (coqtop -v or rocq -v), the configuration
used, and include a complete source example leading to the bug.
Contributing to Rocq
Guidelines for contributing to Rocq in various ways are listed in the contributor's guide.
Information about release plans is at https://github.com/rocq-prover/rocq/wiki/Release-Plan
Supporting Rocq
Help the Rocq community grow and prosper by becoming a sponsor! The Rocq
Consortium can establish sponsorship contracts
or receive donations. If you want to take an active role in shaping Rocq's
future, you can also become a Consortium member. If you are interested, please
get in touch!
Read the full README on GitHub