Great finds; congratulations. Try to locate copies of the software available for download and keep them sealed if you can.
I found that the latest versions of Edittrack and Ludwig are at Tim's (RIP) Atari MIDI World. Also there are M and Music Mouse for Atari, but now I have the apps and dosc for Mac too. One thing I like about having the original package is that I prefer reading the documentation this way. Also Voyetra do seem to offer the "Gold" version of their sequencer, but I don't know if is the same, or full version. I've never done DOS music work. The rest of these apps are not available for free, nor otherwise so far as I know.
You'll be making a collector very happy if you decide to part with them later on.
I guess I would be, but it's not going to happen. I am keeping them. I am becoming too much of a vintage systems nerd, it is great having these "dead" frozen systems which are cheap and I don't need to worry about updates. There are many more interesting sequencers for these old platforms than on the latest ones, in my opinion. Collectors make things too expensive, so I don't feel an obligation. Like the ARP Little Brother I saw on ebay for $1500! Or an MC202 for $1000. Thousands for a vintage sequencer which is just a few logic chips and pots. People who have no use for stuff making it cost far more than it should for those who actually need the tools. This is ranting, I know, but on the other hand interesting and powerful gear and software which happens to not be trendy goes for a steal. DCO/hybrid synths, FM/PM synths, (some)old samplers, funky software. Weirds me out, it does!
