mimalloc (pronounced "me-malloc") is a general purpose allocator with excellent performance characteristics. Initially developed by Daan Leijen for the runtime systems of the Koka and Lean languages. Latest release : v3.3.1 (2026-04-20) recommended. Latest v2 release: v2.3.1 (2026-04-20) stable. Latest v1 release: v1.9.9 (2026-04-20) legacy. mimalloc is a drop-in replacement for malloc and can be

