TPIE - The Templated Portable I/O Environment
The TPIE (Templated Portable I/O Environment) library is a tool box providing efficient and convenient tools to ease the implementation of algorithms and data structures on very large sets of data.
Project status, Releases and stability
As of 2021, this project does not see much development, but it is used heavily in production. There has not been a TPIE release for a long time, but the master branch is very stable and is unlikely to see major breaking changes.