What is new? 1. Lock-free free list. 2. Provide both region allocators (boost::auto_alloc, boost::scoped_alloc) and general-purpose allocators (boost::gc_alloc<http://cpp.winxgui.com/boost-gc-alloc> ). Highlights: 1. Allocating memory is very fast. 2. No memory leaks. No need to delete objects manually. Or forgetting to delete objects is allowed. --- What is boost-memory? It provides allocators named "GC Allocator". Note "GC Allocator" isn't GC. GC Allocator is different from STL Allocator. The following is minimum specification for GC Allocator: typedef void (*DestructorType)(void* data); concept GCAllocator { // Allocate memory without given a cleanup function void* allocate(size_t cb); // Allocate memory with a cleanup function void* allocate(size_t cb, DestructorType fn); // Cleanup and deallocate all allocated memory by this GC Allocator void clear(); // Swap two GCAllocator instances void swap(GCAllocator& o); }; For more information about GC Allocator, refer to http://www.codeproject.com/KB/cpp/gc-allocator.aspx