HOARD

Hoard is a fast, scalable, and memory-efficient memory allocator that can speed up your applications. It's much faster than built-in system allocators: as much as 2.5x faster than Linux, 3x faster than Windows, and 7x faster than Mac. No source code changes necessary. Cross-platform: works on Linux, Mac OS X, and Windows.

Also known as: Emery Berger