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:<p>Outliners -- <a href="http://outliners.scripting.com/" rel="nofollow">http://outliners.scripting.com/</a><p>The seminal PC Outline was shareware and it's still out there:
<a href="https://www.outlinersoftware.com/topics/viewt/2200/0/pc-outline" rel="nofollow">https://www.outlinersoftware.com/topics/viewt/2200/0/pc-outl...</a><p>But it evolved into Grandview:
<a href="https://welcometosherwood.wordpress.com/2009/10/10/grandview/" rel="nofollow">https://welcometosherwood.wordpress.com/2009/10/10/grandview...</a><p>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.<p>Some still have fans.<p>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.<p>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.<p>MS responded with MS-DOS 5, the first ever retail version, which included all this and more.<p>There was a brief "arms race" -- DR-DOS 6, then MS-DOS 6, 6.2, 6.21, 6.22, DR-DOS 7. I've blogged about this:
<a href="https://liam-on-linux.livejournal.com/58013.html" rel="nofollow">https://liam-on-linux.livejournal.com/58013.html</a><p>Then Windows 95 integrated DOS and that ended the battle.<p>DR-DOS got acquired by Novell, then spun off with Caldera, then went FOSS. I am working on some updates:
<a href="https://liam-on-linux.livejournal.com/58013.html" rel="nofollow">https://liam-on-linux.livejournal.com/58013.html</a><p>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:
<a href="https://liam-on-linux.livejournal.com/59703.html" rel="nofollow">https://liam-on-linux.livejournal.com/59703.html</a><p>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.<p>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.<p>There's no burning reason to favour the ancient DOS versions now.<p>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.<p>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.