Beyond Mathlib

The Lean research ecosystem, in one directory.

Browse 636 source-backed Lean ecosystem records from curated repositories and a pinned Reservoir snapshot. Exact Therefore declaration coverage is labelled separately from package and repository discovery.

Reservoir index b6ac225af74c backs 600 directory records. Provider metadata is discovery evidence, not proof verification or authorship.

636 of 636 projects

Package metadataLean library

PrimeCert

Formal prime certificates in Lean 4

Declarations not yet indexedLean 4.33.0-rc1

Pinned Reservoir package record · checked 2026-07-25

Math
Package metadataLean library

sqlite

Sqlite3 bindings for lean4

Declarations not yet indexedLean 4.25.1

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

BibtexQuery

A simple command-line bibtex query utility written in Lean 4

Declarations not yet indexedLean 4.33.0-rc1

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

beam

Claude/Codex skill and local workflow layer for efficient interaction with Lean 4 and Monte-Carlo Tree Search.

Declarations not yet indexedLean 4.32.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

ArtificialAlgorithms

Verified algorithms in Lean, implemented and proved by AIs

Declarations not yet indexedLean 4.27.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataProof corpus

M1F-explained

A computer formalisation of parts of Martin Liebeck's book "a concise introduction to pure mathematics"

Declarations not yet indexedLean nightly-2023-08-05

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

lithe

simple web service in lean4

Declarations not yet indexedLean 4.27.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

VD

Formalizing Value Distribution Theory

Declarations not yet indexedLean 4.33.0-rc1

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

circuitlib

A digital circuit verification library for Lean4

Declarations not yet indexedLean 4.30.0-rc1

Pinned Reservoir package record · checked 2026-07-25

CircuitsElectricalHardware
Package metadataProof corpus

Uniq

Static Uniqueness Analysis for the Lean 4 Theorem Prover

Declarations not yet indexedLean nightly-2023-01-14

Pinned Reservoir package record · checked 2026-07-25

Linear TypesUniqueness Types
Package metadataLean library

FVIntmax

Formal verification of the Intmax protocol in Lean.

Declarations not yet indexedLean 4.14.0-rc2

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

TopSingleLayer

Formal Verification of Top Single Layer Encoding

Declarations not yet indexedLean 4.24.0-rc1

Pinned Reservoir package record · checked 2026-07-25

Math
Package metadataLean library

lFTCM2024

Repository for the conference LFTCM2024

Declarations not yet indexedLean 4.7.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

Lean Book

mdbook template for Lean project

Declarations not yet indexedLean 4.33.0-rc1

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

MonomialOrderedPolynomial

Monomial ordered polynomial implementation in Lean4

Declarations not yet indexedLean 4.29.0-rc8

Pinned Reservoir package record · checked 2026-07-25

Math
Package metadataProof corpus

quasi-borel-spaces

A formalization of Quasi-Borel Spaces in Lean 4

Declarations not yet indexedLean 4.28.0-rc1

Pinned Reservoir package record · checked 2026-07-25

Math
Package metadataLean library

lean-inf

Levi-Civita field implementation in Lean 4 for computing with infinities and infinitesimals.

Declarations not yet indexedLean 4.12.0-rc1

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

proetale

Proétale cohomology in Lean

Declarations not yet indexedLean 4.30.0

Pinned Reservoir package record · checked 2026-07-25

Math