Some of the MS-DOS stuff was a productivity heaven. Norton Commander comes to mind. Then Turbo Vision apps, including Turbo Pascal editor. Any else you remember?
Tornado - which ended up being the IMHO insanely overpriced and now almost unusable InfoSelect. I once wrote an inventory app using Tornado, batch scripts, and a barcode interface... Was insanely fast.
Lots, many of which have been mentioned, but there is one
whole category of app that didn't really make the leap to
Windows (or Mac OS X over in Apple-land) and is basically dead now:
As for the others... well, there were lots! Back in the boom days of MS-DOS (DOS 3.x, mainly, and before) it didn't include a decent text editor, directory navigator, file manager, memory manager, program launcher, task-switcher, inter-computer file-transfer tool, file or disk compression and lots of other things, so there were many 3rd party replacements.
Some still have fans.
DOS 4 started to fix some of that, including a pretty good file manager/program launcher called DOSShell, but otherwise it was bloated: it was buggy and took a lot of RAM, a scarce resource under DOS.
DR responded with DR-DOS 5, which was leaner, meaner, gave you more free RAM than even MS-DOS 3.3, but gave you big (>32MB) partitions, a graphical shell, a full-screen editor and lots more.
MS responded with MS-DOS 5, the first ever retail version, which included all this and more.
IBM continued with PC DOS 7 and the little-known PC DOS 7.1, which fixes a load of bugs, adds FAT32 support, LBA disk access, support for modern >8GB disks, and more. It's a free download if you know where to look:
https://liam-on-linux.livejournal.com/59703.html
These later versions of DOS -- DR-DOS 5, 6 & 7, MS-DOS 5 & 6, and PC-DOS 6, 7 & 7.1 -- included replacements for most of the 3rd party utilities. 32-bit Windows then made most of them irrelevant. A lot of the companies went under.
Most of the office-type apps made the jump to Windows: WordPerfect ended up a good word-processor. Borland's DOS apps got bundled with it. IBM bought Lotus, Samna and others and made SmartSuite.
There's no burning reason to favour the ancient DOS versions now.
But outliners never really made that leap and so there's now a choice of MS Word or run ancient DOS stuff. The FOSS world has never embraced outliners: LibreOffice doesn't include one. There are some FOSS 2-pane outliners -- what Wikipedia calls "extrinsic" outliners -- but they are a totally separate, different type of app, and personally I have no use for them.
So I run an ancient version of MS Word, Word 97, just for Outline mode. It runs perfectly under WINE on Ubuntu and other distros.
