I have found FreeDOS to be kind of hostile to vintage computer collectors, which is maddening.
It is pretty much expected that you will be running an 80386 CPU or better because a lot of the new programming uses a DOS extender to allow for a large, 32 bit address space. To me with my 16 bit machines that is kind of maddening; people just don't want to do the extra work to make programs run on 16 bit machines because segmentation and small memory spaces are hard. I've written both an FTP and an HTTP server with gobs of features than run on a lowly PCjr, yet the FreeDOS network package installer needs a 32 bit machine.
There are FreeDOS distributions which are geared toward smaller 8086 class machines; some of them are linked from the FreeDOS web pages. There is often discussion about new FreeDOS variants on their mailing lists, but most of those variants are lame rehashes of the main project so they are not terribly interesting. Look for SVAROG at
http://svarog86.sourceforge.net/ which is probably one of the better ones.
FreeDOS wants to be open source 'pure', but unfortunately that means that a lot of older software can not be distributed as part of FreeDOS. A lot of older software was just labeled as 'shareware', 'freeware', or 'public domain' without source code or without a license that meets modern 'open' standards. It's not bad software, but because it was written before the free software movement really took hold it often has the wrong or no license associated with it. I'd love to see a more pragmatic DOS software repository that allows for things that are not necessarily open source but are still 'free' enough to be distributed.