Last week, FreeDOS turned 25 years old [freedos.org]. FreeDOS [freedos.org] is a complete, Free Software Disk Operating System (DOS) and a drop-in replacement for MS-DOS which has disappeared long ago. It is still used in certain niche cases such as playing legacy games, running legacy software, or certain embedded systems. Back in the day, it was also quite useful for updating BIOS.
Of those that will be, are, or have been using it, what tasks has it been good for?
The Linux Journal : FreeDOS's Linux Roots [linuxjournal.com]
OpenSource.com : FreeDOS turns 25 years old: An origin story [opensource.com]
OS News : FreeDOS’s Linux roots [osnews.com]
Lilliputing : FreeDOS turns 25 (open source, DOS-compatible operating system) [liliputing.com]
Earlier on SN:
Jim Hall on FreeDOS and the Upcoming 1.2 Release [soylentnews.org] (2016)
Retro-Malware: DOS TSRs, Interrupt Handlers, and Far Calls, Part 2 [soylentnews.org] (2016)
Retro-Malware: Writing A Keylogger for DOS, Part 1 [soylentnews.org] (2016)