libspectrum is a library which is designed to make the input and
output of ZX Spectrum emulator files slightly easier than it would be
otherwise.

Currently supported are:

* Snapshots: .z80, .szx, .sna (all read/write), .zxs, .sp., .snp and
  +D snapshots (read only).
* Tape images: .tzx, .tap (read/write) and Warajevo .tap, Z80Em and
  CSW version 1 (read only).
* Input recordings: .rzx (read/write).
* Timex cartridges: .dck (read only).
* IDE hard disk images: .hdf (read/write).
* Microdrive cartridge images: .mdr (read/write).

The Amiga port supports decompression of files using xfdmaster.library.
See the XFD.OS4 document in misc/emu/fuse.lha for more details.