Repositories list

• physlib

  Public
  A project to digitalise results from physics into Lean.

  physicstheorem-provinglean

  physicstheorem-provinglean

  Lean

  •

  Apache License 2.0

  •176176 forks•719719 stars•5757 issues•3737 pull requests•Updated Sep 7, 2026Sep 7, 2026

• blog

  Public
  Source for the community blog

  Python

  •3131 forks•1111 stars•44 issues•33 pull requests•Updated Sep 7, 2026Sep 7, 2026

• mathlib4

  Public
  The math library of Lean 4

  lean4

  lean4

  Lean

  •

  Apache License 2.0

  •1.7k1.7k forks•4k4k stars•282282 issues•3.1k3.1k pull requests•Updated Sep 7, 2026Sep 7, 2026

• mathlib4_copy

  Public
  A fork of the mathlib4 repo with CI disabled

  Lean

  •

  Apache License 2.0

  •1.7k1.7k forks•00 stars•00 issues•00 pull requests•Updated Sep 7, 2026Sep 7, 2026

• leanprover-community.github.io

  Public
  Hosts the website for mathlib and other Lean community infrastructure.

  CSS

  •

  MIT License

  •189189 forks•8383 stars•2020 issues•1414 pull requests•Updated Sep 7, 2026Sep 7, 2026

• mathlib4-nightly-testing

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

  Lean

  •

  Apache License 2.0

  •1.7k1.7k forks•33 stars•00 issues•1515 pull requests•Updated Sep 7, 2026Sep 7, 2026

• mathlib_stats

  Public
  Display gitstats output on the mathlib website

  Python

  •55 forks•33 stars•00 issues•00 pull requests•Updated Sep 7, 2026Sep 7, 2026

• crossref-exports

  Public
  JavaScript

  •22 forks•00 stars•00 issues•00 pull requests•Updated Sep 7, 2026Sep 7, 2026

• batteries

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

  leanlean4

  leanlean4

  Lean

  •

  Apache License 2.0

  •161161 forks•419419 stars•2727 issues•6060 pull requests•Updated Sep 6, 2026Sep 6, 2026

• mathlib-ci

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

  Python

  •

  Apache License 2.0

  •1010 forks•33 stars•00 issues•66 pull requests•Updated Sep 6, 2026Sep 6, 2026

• batteries-recycling

  Public
  Lean

  •

  Apache License 2.0

  •00 forks•00 stars•00 issues•00 pull requests•Updated Sep 6, 2026Sep 6, 2026

• batteries-cell-test

  Public
  Lean

  •

  Apache License 2.0

  •00 forks•00 stars•00 issues•00 pull requests•Updated Sep 6, 2026Sep 6, 2026

• iris-lean

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

  Lean

  •

  Apache License 2.0

  •6262 forks•217217 stars•2727 issues•2121 pull requests•Updated Sep 5, 2026Sep 5, 2026

• flt-regular

  Public
  Fermat's Last Theorem for regular primes

  Lean

  •

  Apache License 2.0

  •77 forks•6868 stars•11 issue•00 pull requests•Updated Sep 4, 2026Sep 4, 2026

• import-graph

  Public
  Tool to analyse the import structure of lean projects.

  lean4

  lean4

  Lean

  •

  Apache License 2.0

  •1616 forks•2626 stars•66 issues•99 pull requests•Updated Sep 4, 2026Sep 4, 2026

• mathlib-phrasebook

  Public
  How to say it using Mathlib.

  Lean

  •99 forks•2020 stars•11 issue•44 pull requests•Updated Sep 4, 2026Sep 4, 2026

• mathlib4_docs

  Public
  lean4

  lean4

  77 forks•1111 stars•00 issues•00 pull requests•Updated Sep 4, 2026Sep 4, 2026

• azure-scripts

  Public
  scripts and cron jobs for Azure

  Python

  •55 forks•11 star•00 issues•00 pull requests•Updated Sep 4, 2026Sep 4, 2026

• mathlib-landing

  Public
  HTML

  •00 forks•00 stars•00 issues•11 pull request•Updated Sep 4, 2026Sep 4, 2026

• lean-auto

  Public
  Experiments on automation for Lean

  Lean

  •

  Apache License 2.0

  •3131 forks•186186 stars•99 issues•44 pull requests•Updated Sep 2, 2026Sep 2, 2026

• bors-ng

  Public
  👁 A merge bot for GitHub Pull Requests

  Elixir

  •

  Apache License 2.0

  •184184 forks•33 stars•00 issues•22 pull requests•Updated Sep 2, 2026Sep 2, 2026

• queueboard

  Public
  00 forks•00 stars•00 issues•11 pull request•Updated Sep 1, 2026Sep 1, 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•11 pull request•Updated Sep 1, 2026Sep 1, 2026

• lean4game

  Public
  Server to host Lean games

  reactlean4

  reactlean4

  TypeScript

  •

  GNU General Public License v3.0

  •103103 forks•549549 stars•118118 issues•1818 pull requests•Updated Sep 1, 2026Sep 1, 2026

• add-combi

  Public
  The sublibrary of Mathlib dedicated to additive combinatorics

  combinatoricslean4additive-combinatorics

  combinatoricslean4additive-combinatorics

  Lean

  •

  Apache License 2.0

  •55 forks•1919 stars•00 issues•11 pull request•Updated Aug 31, 2026Aug 31, 2026

• duper

  Public
  lean4

  lean4

  Lean

  •

  Apache License 2.0

  •1414 forks•117117 stars•11 issue•00 pull requests•Updated Aug 31, 2026Aug 31, 2026

• lean4web

  Public
  Lean web editor

  lean4

  lean4

  TypeScript

  •

  Apache License 2.0

  •6262 forks•148148 stars•1111 issues•33 pull requests•Updated Aug 30, 2026Aug 30, 2026

• NNG4

  Public
  Natural Number Game

  lean4

  lean4

  Lean

  •

  Apache License 2.0

  •9090 forks•368368 stars•3939 issues•1313 pull requests•Updated Aug 30, 2026Aug 30, 2026

• hopscotch

  Public
  hopscotch is an interactive validation tool to assist in keeping your Lean dependencies up to date

  Lean

  •

  Apache License 2.0

  •00 forks•88 stars•00 issues•44 pull requests•Updated Aug 29, 2026Aug 29, 2026

• downstream-reports

  Public
  Reporting workflows and dashboards using the hopscotch tool

  Python

  •33 forks•44 stars•00 issues•22 pull requests•Updated Aug 29, 2026Aug 29, 2026