Add-ons

DLT

• SDX Imager online (beta) - Web browser utility to customize CAR: contents: add/remove user files, modify default CONFIG.SYS etc. (for SDX 4.49f and above).
• SDX Imager 3.1.2 - Windows utility for advanced users to customize CAR: contents: add/remove user files, modify default CONFIG.SYS etc. (x86 and x64 versions, for SDX 4.49f and above).
• SDX Imager 3.0.8 - Windows utility for advanced users to customize CAR: contents: add/remove user files, modify default CONFIG.SYS etc. (x86 and x64 versions).
• SDX2Atrax converter - Windows command-line utility to convert between intSDX128 and Atrax images.
• MUXTIME (SDX version) - will retrieve time and date settings from the Multiplexer! master machine.
• Emu-pack v.0.2, access emulator's "H:" device from COMMAND.COM.
• S2I, a SIO2IDE-specific tool.
• S2S, a SIO2SD-specific tool.
• MNT, a KMK/JŻ IDE 1.0 / IDEa specific tool (do not use with IDE Plus 2.0).

Contributed by Bober

• Aprplr - APR animation player
• Core Wars - SpartaDOS X Core Wars package
• Toys - 4 small programs: Blink, HQ9, Life, Sieve (updated 5 V 2011).

Contributed by FujiDude

• AAC v.1.2, an ASCII<->ATASCII converter (updated 13 VIII 2015)

Contributed by Holger Janz

• Fast Assembler, now being developed again as of January 2021.

Contributed by mono

• Worm, a screen saver
• Drum Machine, convert your Atari into a drum kit!
• CMC Play, Chaos Music Composer player
• FC Play, Future Compoer player
• MPT Play, Music Protracker player
• RMT Play, Raster Music Tracker player
• ST Play, Sound Tracker player
• TMC Play, Theta Music Composer player

Contributed by pirx and Zosia

• Headache, the first game programmed in SpartaDOS X batch file language.

Other

• Diamond Desktop 2.0 - patched for SDX compatibility
• BASIC XE 4.1 - patched for better SDX compatibility
• BASIC XE 4.2 - patched for better SDX compatibility