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.

600 of 636 projects

Clear search
Package metadataLean library

QuantumLogicalFramework

quantum genesis constructive possibilist quantum logical synthesis

Declarations not yet indexedLean 4.30.0-rc2

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataTeaching project

regensburg-itp-school-2023

Materials for my lecture at the 2023 International School on Interactions of Proof Assistants and Mathematics in Regensburg

Declarations not yet indexedLean 4.0.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

SuperTensor

Verified tensor graph optimization in Lean 4: constructive soundness proofs + equality saturation + verified extraction via e-graph↔circuit bijection + multi-target code generation.

Declarations not yet indexedLean 4.26.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

redisLean

Lean bindings for redis/hiredis

Declarations not yet indexedLean 4.31.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

lean_snakebird

An implementation of Snakebird in Lean.

Declarations not yet indexedLean 4.8.0-rc1

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

BET

Project for "Machine-Checked Mathematics" at the Lorentz Center

Declarations not yet indexedLean 4.33.0-rc1

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

detective

A Lean4 library to formalize and proof-check murder mysteries like Murdle, KnivesOut and Drishyam

Declarations not yet indexedLean 4.29.1

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

LeanSerde

Type-safe serialization for Lean

Declarations not yet indexedLean 4.25.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataProof corpus

PersistentDecomp

Formalizing the Structure Theorem for Persistence Modules

Declarations not yet indexedLean 4.32.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

CatDG

Aspects of categorical differential geometry, formalised in lean 4.

Declarations not yet indexedLean 4.29.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

miniF2F-lean4

miniF2F dataset ported into Lean 4

Declarations not yet indexedLean 4.6.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

RelationalAlgebra

University Master Thesis

Declarations not yet indexedLean 4.24.0

Pinned Reservoir package record · checked 2026-07-25

Math
Package metadataLean library

lean-gccjit

libgccjit bindings for Lean4

Declarations not yet indexedLean 4.1.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean tool

lapis

✏️ | A cutting-edge, concurrent & performant Language Server Protocol (LSP) framework for Lean 4.

Declarations not yet indexedLean 4.30.0-rc1

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

riddle-proofs

Riddles solved in Lean4 for educational purposes

Declarations not yet indexedLean 4.22.0-rc3

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

controlflow

A control flow graph library for Lean

Declarations not yet indexedLean 4.25.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

automated_Theory_Construction

A prototype framework for automated theory construction in Lean 4.

Declarations not yet indexedLean 4.29.0-rc6

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

cryptolib

The cryptography library of Lean 4

Declarations not yet indexedLean 4.19.0-rc2

Pinned Reservoir package record · checked 2026-07-25

Math