Repositories list

• blog

  Public
  Source for the community blog

  Python

  •3030 forks•1111 stars•44 issues•44 pull requests•Updated Aug 18, 2026Aug 18, 2026

• mathlib_stats

  Public
  Display gitstats output on the mathlib website

  Python

  •55 forks•33 stars•00 issues•00 pull requests•Updated Aug 18, 2026Aug 18, 2026

• mathlib4-nightly-testing

  Public
  nightly-testing and lean-pr-testing branches of Mathlib

  Lean

  •

  Apache License 2.0

  •1.6k1.6k forks•22 stars•00 issues•1616 pull requests•Updated Aug 18, 2026Aug 18, 2026

• batteries

  Public
  The "batteries included" extended library for the Lean programming language and theorem prover

  leanlean4

  leanlean4

  Lean

  •

  Apache License 2.0

  •158158 forks•415415 stars•2727 issues•5656 pull requests•Updated Aug 18, 2026Aug 18, 2026

• iris-lean

  Public
  Lean 4 port of Iris, a higher-order concurrent separation logic framework

  Lean

  •

  Apache License 2.0

  •5858 forks•213213 stars•4242 issues•2323 pull requests•Updated Aug 17, 2026Aug 17, 2026

• mathlib4

  Public

  leanprover-community/mathlib4’s past year of commit activity
  The math library of Lean 4

  lean4

  lean4

  Lean

  •

  Apache License 2.0

  •1.6k1.6k forks•3.9k3.9k stars•287287 issues•3.2k3.2k pull requests•Updated Aug 17, 2026Aug 17, 2026

• crossref-exports

  Public
  JavaScript

  •00 forks•00 stars•00 issues•00 pull requests•Updated Aug 17, 2026Aug 17, 2026

• leanprover-community.github.io

  Public

  leanprover-community/leanprover-community.github.io’s past year of commit activity
  Hosts the website for mathlib and other Lean community infrastructure.

  CSS

  •

  MIT License

  •189189 forks•8080 stars•2121 issues•1515 pull requests•Updated Aug 17, 2026Aug 17, 2026

• mathlib4_copy

  Public
  A fork of the mathlib4 repo with CI disabled

  Lean

  •

  Apache License 2.0

  •1.6k1.6k forks•00 stars•00 issues•00 pull requests•Updated Aug 17, 2026Aug 17, 2026

• physlib

  Public
  A project to digitalise results from physics into Lean.

  physicstheorem-provinglean

  physicstheorem-provinglean

  Lean

  •

  Apache License 2.0

  •162162 forks•694694 stars•7575 issues•3737 pull requests•Updated Aug 17, 2026Aug 17, 2026

• lean-update

  Public
  GitHub Action which automatically updates Lean projects

  github-actionslean4

  github-actionslean4

  Lean

  •

  MIT License

  •66 forks•77 stars•1212 issues•00 pull requests•Updated Aug 17, 2026Aug 17, 2026

• ProofWidgets4

  Public
  Helper toolkit for creating your own Lean 4 UserWidgets

  visualizationleanlean4

  visualizationleanlean4

  Lean

  •

  Apache License 2.0

  •4747 forks•221221 stars•1212 issues•00 pull requests•Updated Aug 17, 2026Aug 17, 2026

• mathlib-at-ICERM26

  Public
  A fork of mathlib4 for team work during the May 2026 meeting at ICERM

  Lean

  •

  Apache License 2.0

  •1.6k1.6k forks•55 stars•00 issues•11 pull request•Updated Aug 15, 2026Aug 15, 2026

• flt-regular

  Public
  Fermat's Last Theorem for regular primes

  Lean

  •

  Apache License 2.0

  •44 forks•6363 stars•00 issues•00 pull requests•Updated Aug 15, 2026Aug 15, 2026

• queueboard-core

  Public
  testing a split of code and data for the queueboard

  Python

  •

  Apache License 2.0

  •99 forks•55 stars•2525 issues•22 pull requests•Updated Aug 15, 2026Aug 15, 2026

• downstream-reports

  Public
  Reporting workflows and dashboards using the hopscotch tool

  Python

  •33 forks•44 stars•11 issue•11 pull request•Updated Aug 14, 2026Aug 14, 2026

• azure-scripts

  Public
  scripts and cron jobs for Azure

  Python

  •55 forks•11 star•00 issues•00 pull requests•Updated Aug 14, 2026Aug 14, 2026

• add-combi

  Public
  The sublibrary of Mathlib dedicated to additive combinatorics

  combinatoricslean4additive-combinatorics

  combinatoricslean4additive-combinatorics

  Lean

  •

  Apache License 2.0

  •33 forks•1818 stars•00 issues•11 pull request•Updated Aug 14, 2026Aug 14, 2026

• duper

  Public
  lean4

  lean4

  Lean

  •

  Apache License 2.0

  •1414 forks•119119 stars•11 issue•00 pull requests•Updated Aug 11, 2026Aug 11, 2026

• lean-auto

  Public
  Experiments on automation for Lean

  Lean

  •

  Apache License 2.0

  •3131 forks•183183 stars•99 issues•44 pull requests•Updated Aug 11, 2026Aug 11, 2026

• repl

  Public
  A simple REPL for Lean 4, returning information about errors and sorries.

  Lean

  •

  Apache License 2.0

  •6868 forks•218218 stars•2626 issues•1919 pull requests•Updated Aug 11, 2026Aug 11, 2026

• lean4-metaprogramming-book

  Public
  lean4

  lean4

  Lean

  •

  Apache License 2.0

  •7777 forks•310310 stars•2525 issues•55 pull requests•Updated Aug 11, 2026Aug 11, 2026

• import-graph

  Public
  Tool to analyse the import structure of lean projects.

  lean4

  lean4

  Lean

  •

  Apache License 2.0

  •1515 forks•2424 stars•44 issues•00 pull requests•Updated Aug 10, 2026Aug 10, 2026

• aesop

  Public
  White-box automation for Lean 4

  lean4

  lean4

  Lean

  •

  Apache License 2.0

  •5959 forks•397397 stars•3737 issues•88 pull requests•Updated Aug 10, 2026Aug 10, 2026

• LeanSearchClient

  Public
  Syntax for searching with natural language from Lean, using https://leansearch.net/ (may extend to other services)

  Lean

  •

  Apache License 2.0

  •1010 forks•3535 stars•44 issues•22 pull requests•Updated Aug 10, 2026Aug 10, 2026

• quote4

  Public
  Intuitive, type-safe expression quotations for Lean 4.

  lean4

  lean4

  Lean

  •

  Apache License 2.0

  •2626 forks•111111 stars•1818 issues•1212 pull requests•Updated Aug 10, 2026Aug 10, 2026

• plausible

  Public
  Lean

  •

  Apache License 2.0

  •2828 forks•114114 stars•11 issue•77 pull requests•Updated Aug 10, 2026Aug 10, 2026

• mathlib-phrasebook

  Public
  How to say it using Mathlib.

  Lean

  •77 forks•1717 stars•11 issue•33 pull requests•Updated Aug 10, 2026Aug 10, 2026

• mathlib-ci

  Public
  Scripts and utilities to support the mathlib repository's CI/CD operations

  Python

  •

  Apache License 2.0

  •77 forks•22 stars•00 issues•88 pull requests•Updated Aug 10, 2026Aug 10, 2026

• queueboard

  Public
  00 forks•00 stars•00 issues•00 pull requests•Updated Aug 9, 2026Aug 9, 2026