- The INTONE project: C and Fortran compilers and analysis tools
- OdinMP: A Free, Portable OpenMP Implementation for C
- OpenUH: Open source UH compiler suite for OpenMP (Univ of Houston)
- KOJAK: Kit for Objective Judgement and Knowledge-based Detection of Performance Bottlenecks (Jülich Supercomputing Center)
- OMPi OpenMP C compiler – OMPi is a lightweight, open source OpenMP compiler and runtime system for C, conforming to version 3.0 of the specification.