Do you have an old 386 or 486 lying around? Are you thinking of turning it into a kind of “weekend project” and restoring it? Or do you have a more specific use in mind? The software that can make it work again is out there, and an excellent starting point for finding it is Vetusware, a portal packed with thousands of abandonware examples compatible with almost any computer.
The Gray Area of Abandonware
Abandonware walks a very gray region in the software world. Some companies are relatively tolerant of its existence. Others prefer to do a favor to the enthusiast community, declaring certain products as freeware, or even releasing their code. And there are also those that don't hesitate to start a witch hunt. Personally, I don't understand what kind of economic damage a copy of MS-DOS 6.22 floating on the Web can do, twenty-five years after its release, but we already know how these patent issues are.
At the same time, abandonware is an excellent source of help to restore the functions of some systems several decades old. Now, my goal is not to convince anyone to go browse the web with Windows 3.11 (technically possible... although the experience is awful), but if the idea is to assign that hardware a specific function (word processor, spreadsheet editing, music playback), all you need is the right software.
There are many portals full of abandonware on the Web, however your first stop should be Vetusware. I admit it's not easy to get around the site. The search function is buried at the bottom and the amount of entries is enormous, but with a little patience you can find true gems like the eternal Norton Commander and the QEMM memory manager.
The game list is also very interesting, with classics like Alone in the Dark (the first one), the Police Quest series, and SimCity. Of course, there are copies of various operating systems and office suites, with MS-DOS and Office leading the way. As I said before... gray area. The only thing Vetusware requests is to register (a completely free process) and obviously, that you know what you're doing. After all, these are programs several decades old, and support is nil.
https://old.neoteo.com/1-500-ejemplares-de-shareware-para-windows-3-1-en-tu-navegador/