OrangeFS, a scale-out network file system designed for use on high-end computing (HEC) systems that provides very high-performance access to multi-server-based disk storage, in parallel. The OrangeFS server and client are user-level code, making them very easy to install and manage. OrangeFS has optimized MPI-IO support for parallel and distributed applications, and it is leveraged in production installations and used as a research platform for distributed and parallel storage.

OrangeFS is now part of the Linux kernel as of version 4.6. The upstream kernel module is the preferred method of Linux kernel integration. As of 5.13 performance has been significantly improved with full integration with the Linux page cache.