Xspect is the X11 version of Spectemu which emulates the 48k ZX Spectrum, which uses the Z80 microprocessor.
It emulates the Z80 processor as well as the 48k Spectrum's other hardware: keyboard, screen, sound, tape I/O. The emulation is very close to the real thing, but it is still quite fast (It was reported to be working well on a laptop with 486 at 25MHz!). On the other hand, the user interface is not the best.
Features include: - Sound support through Linux kernel sound-card driver. - Snapshot saving and loading (.Z80 and .SNA format) - Tape emulation: loading from tape files (.TAP and .TZX format) - Optional quick loading of tapes. - Saving to tape files. - Separate utility to save tape files to real tape - Configurable with config files and from command line