kapynOpen Source

mimalloc: A new, high-performance, scalable memory allocator for the modern era

mimalloc is a new, high-performance, scalable memory allocator designed as a drop-in replacement for malloc and free. This open-source tool offers bounded allocation times, low overhead, and minimal contention, making it a strong contender for developers optimizing performance-critical applications. Its small codebase and clear structure facilitate integration into existing projects.

Microsoft Research·May 13, 2026

Opening Kapyn…