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    83 repositories

    • reference-manual

      Public
      The Lean reference manual
      Lean
      •
      Apache License 2.0
      •48•103•102•13•Updated Mar 7, 2026Mar 7, 2026

    • lean4-pr-releases

      Public
      Automated releases from leanprover/lean4 PRs
      3•2•0•0•Updated Mar 7, 2026Mar 7, 2026

    • lean4

      Public
      Lean 4 programming language and theorem prover
      leanlean4
      leanlean4
      Lean
      •
      Apache License 2.0
      •772•7.5k•865•447•Updated Mar 7, 2026Mar 7, 2026

    • lean-kernel-arena

      Public
      Lean
      •7•16•0•0•Updated Mar 7, 2026Mar 7, 2026

    • lean4-nightly

      Public
      Nightly builds
      3•23•0•0•Updated Mar 7, 2026Mar 7, 2026

    • lean4export

      Public
      Plain-text declaration export for Lean 4
      Lean
      •
      Apache License 2.0
      •16•27•1•3•Updated Mar 7, 2026Mar 7, 2026

    • comparator

      Public
      Lean
      •1•36•4•5•Updated Mar 7, 2026Mar 7, 2026

    • lean4checker

      Public
      Replay the `Environment` for a given Lean module, ensuring that all declarations are accepted by the kernel.
      Lean
      •
      Apache License 2.0
      •10•34•0•2•Updated Mar 7, 2026Mar 7, 2026

    • lean4-cli

      Public
      A Lean 4 library for configuring Command Line Interfaces and parsing command line arguments.
      clileanlean4
      clileanlean4
      Lean
      •
      MIT License
      •22•101•1•1•Updated Mar 7, 2026Mar 7, 2026

    • vscode-lean4

      Public
      Visual Studio Code extension for the Lean 4 proof assistant
      vscodelean
      vscodelean
      TypeScript
      •
      Apache License 2.0
      •87•255•46•12•Updated Mar 7, 2026Mar 7, 2026

    • KLR

      Public
      A formalization of ML kernel languages
      C
      •
      Apache License 2.0
      •13•43•7•14•Updated Mar 6, 2026Mar 6, 2026

    • verso-web-components

      Public
      A collection of reusable components from the Lean website designed build related sites with the same look and feel.
      Lean
      •
      Apache License 2.0
      •0•3•0•1•Updated Mar 6, 2026Mar 6, 2026

    • human-eval-lean

      Public
      Hand-written verified Lean solutions for the HumanEval benchmark
      Lean
      •
      MIT License
      •8•28•95•9•Updated Mar 6, 2026Mar 6, 2026

    • cslib

      Public
      The Lean Computer Science Library (CSLib)
      computer-sciencelean
      computer-sciencelean
      Lean
      •
      Apache License 2.0
      •98•410•29•33•Updated Mar 6, 2026Mar 6, 2026

    • verso

      Public
      Lean documentation authoring tool
      Lean
      •
      Apache License 2.0
      •101•260•52•18•Updated Mar 6, 2026Mar 6, 2026

    • doc-gen4

      Public
      Document Generator for Lean 4
      lean4
      lean4
      Lean
      •
      Apache License 2.0
      •62•132•27•4•Updated Mar 5, 2026Mar 5, 2026

    • radar

      Public
      "Do you know how fast you were going?"
      Java
      •1•6•0•1•Updated Mar 4, 2026Mar 4, 2026

    • lean-action

      Public
      GitHub action for standard CI in Lean projects
      leangithub-actionslean4
      leangithub-actionslean4
      Shell
      •
      Apache License 2.0
      •14•31•9•8•Updated Mar 3, 2026Mar 3, 2026

    • radar-bench-lean4

      Public
      Radar benchmarking for lean4
      Python
      •0•0•0•0•Updated Mar 3, 2026Mar 3, 2026

    • subverso

      Public
      Lean
      •
      Apache License 2.0
      •8•7•3•0•Updated Mar 2, 2026Mar 2, 2026

    • reservoir-index

      Public
      Registry index for Reservoir
      Lean
      •3•5•0•0•Updated Mar 1, 2026Mar 1, 2026

    • lean4web

      Public
      CSS
      •
      Apache License 2.0
      •50•0•0•2•Updated Feb 25, 2026Feb 25, 2026

    • elan

      Public
      The Lean version manager
      Rust
      •
      Apache License 2.0
      •50•487•36•4•Updated Feb 25, 2026Feb 25, 2026

    • skills-testing

      Public
      Test infrastructure and results for leanprover/skills
      Shell
      •0•1•0•0•Updated Feb 25, 2026Feb 25, 2026

    • skills

      Public
      Skills for AIs using the Lean programming language and theorem prover — proofs, toolchain setup, bisection, and more
      Shell
      •
      Apache License 2.0
      •0•17•0•0•Updated Feb 25, 2026Feb 25, 2026

    • Pantograph

      Public
      (Mirror) A Machine-to-Machine Interaction System for Lean 4
      machine-learningtheorem-provingproof-assistant
      machine-learningtheorem-provingproof-assistantlean4
      Lean
      •
      Apache License 2.0
      •11•55•0•0•Updated Feb 24, 2026Feb 24, 2026

    • leansqlite

      Public
      SQLite bindings for Lean
      C
      •
      Apache License 2.0
      •0•36•0•0•Updated Feb 24, 2026Feb 24, 2026

    • reservoir

      Public
      Package registry for Lean/Lake.
      Vue
      •
      Apache License 2.0
      •7•40•18•2•Updated Feb 20, 2026Feb 20, 2026

    • radar-bench-generic

      Public
      Generic radar benchmark repo that tries to execute bench suites at well-known locations
      Shell
      •0•0•0•0•Updated Feb 10, 2026Feb 10, 2026

    • verso-templates

      Public
      Templates for getting started with Verso
      Lean
      •1•4•0•0•Updated Jan 29, 2026Jan 29, 2026