ES.pectrum
Not an emulator I had used before but seems to have a support for a large range of machines:
Failed 9 of 152
http://www.habisoft.com/espectrum/EN.htm#Descargas
http://www.habisoft.com/espectrum/Manual/EN.htm
Emulation of official models: 16, 48, 48+ (Spanish, Swedish, Arab), 48 NTSC, 128, 128+ (Spanish), grey +2 (Spanish, English, French, Arab), black +2 (Spanish, English, Arab) v4.0 and v4.1, +3 (Spanish, English) v4.0 and v4.1, Timex TC2048, Timex TC2068, Timex TS2068, Unipolbrit Komputer 2086.
Emulation of clones: Inves+, Tk90x (Portuguese, Argentinian), Tk95 (Portuguese, Argentinian), Orel BK-08, Pentagon 128, Pentagon 512, Pentagon 1024 SL v2.x, Scorpion ZS-256, Scorpion ZS-256 Turbo+, Leningrad, Dubna 48K, ATM-Turbo, ATM-Turbo 2+, Ice-Felix HC-91, BK-0001, Foton-IK03.
Emulation of mods: +2e (Spanish, English), +3e (Spanish, English), Spanish Pentagon.
Emulation of virtual ones: Spec256-48, Spec256-128.
Recognized formats:
Snapshot: Z80, SNA, SP, FSU, SZX, EZX, ESP (native).
Tape: TAP, TZX, PZX, CSW, WAV, VOC.
Disc: DSK, FDI, TRD, SCL, Hobbeta, MDR (if it can be considered as one).
Actions: RZX.
Screen: PNG, GIF (animated), SCR.
Cartridge: DCK, ROM (IF2, Dandanator), BIN.
Video: WMV.
Storage: HDF, RAW / BIN, IMG.
Emulation of hardware:
DivMMC.
Multiface 1, 128, +3, SpecMate.
Dandanator, including old versions.
Data-Gear (DMA).
PDS (development system). Requires a special DosBox version for linking.
Turbo Sound.
Covox, Specdrum.
16c modes in Pentagon.
64 / 4096 colour palette in Pentagon.
ULA+.
ZX1 extras (raster interruption, turbo, 128x96 mode).
Timex video modes.
Z80_GFX and 256 colour modes (Spec256, EmuzWin).
Betadisk: Beta, Beta+, Beta 128, and clones: Apina, CAS, Arcade, IDS 91, CBI 95.
Joysticks: Cursor / Protek / AGF, Sinclair 1 y 2, Fuller, Kempston.
Mouse: Kempston.
Guns: Gunstick, Lightgun.
Turbo modes.