1. LeanHomepage
Theorem Proving in Lean
FAQ
2. Lean2Lean theorem prover version 0.2 (it supports standard and HoTT modes)
3. Lean4Lean 4 programming language and theorem prover
4. vscode-leanAn extension for VS Code which provides support for the Lean language.
7. lakeLean 4 build system and package manager with configuration files written in Lean.