We on the Rust team got to speak about the lessons learned from the EASTL with Paul Pedriana (the author of much of it) while designing the Rust standard library. It&#x27;s a significant influence on the proposed allocators API currently in RFC. The EASTL is worth looking at for anyone interested in designing libraries that work well in low-memory environments. (Much of this library was written with devices like the Nintendo DS in mind, which had 4 MB--4 MB!--of RAM as I recall.)