See: https://xnvme.io/docs for documentation

• xNVMe, base NVMe specification (1.4) available as library and CLI xnvme
  • Memory Management
  • NVMe command interface | Synchronous commands | Asynchronous commands
  • Helpers / convenience functions for common operations
  • CLI-library for convenient derivative work
  • Multiple backend implementations | Linux + FreeBSD SPDK | FreeBSD IOCTL | Linux IOCTL | Linux IOCTL + io_uring async. IO
• libxnvme, base NVMe Specification available as library and CLI xnvme
• liblblk, NVM optional command-set / extension Specification lblk
• libznd, ZNS Specification available as library and CLI zoned
• libkvs, SNIA KV API implemented [TODO]
• libocssd, Open-Channel 2.0 support [TODO]
• libWHATEVERYOUWANT, Go ahead and implement what your need [TODO]

xNVMe: is in active development and maintained by Simon A. F. Lund [email protected], pull requests are most welcome.