Is that something you’re looking for? As a practical matter, the effort to maintain multiple release branches and backports – compared to the norm of just maintaining a single main branch – is an outsized effort, available to only well-funded FOSS projects, usually by having an industry sponsor that makes it a priority.

I posit that the grand majority of selfhosted FOSS software, by project count, do not have back ported branches. And so production environments will want to set up an offline validation setup to evaluate update, prior to making the switch. Not convenient, sure, but not exactly insurmountable either.

At some point, some amount of responsibility for use of FOSS software must fall upon the users, or else the project is less about creating value by building up the commons for software, and more on the exploitation/abuse of the volunteers.

Downside: breaking changes are fairly common AFAIK.

By my extremely cursory reading, this stopped being a problem after the v2.0.0 release, when they adopted semantic versioning. According, breaking changes would only occur when the major version number is rolled. And version v3.0.0 was just released 5 days ago, whereas v2.0.0 was released in October 2025.

It may be down to taste, but I view 9 months as being acceptable, given the breadth of features offered and the folks willing to put effort into the project.

If a Nintendo Wii counts as retro, there’s at least one person hosting a website using one: https://infosec.exchange/@alexhaydock/114377262481451962

But that was (incredibly!) able to run a prebuilt version of NetBSD, which had drivers for the official Wii USB LAN adapter. If instead there’s a piece of hardware that can boot an OS but doesn’t have a network interface device, then SLIP could be useful. Here’s a vape hosting a website: https://bogdanthegeek.github.io/blog/projects/vapeserver/

And if still, said retro device has no concept of IP or networking, can it at least speak serial over a 300 baud modem?

IMO, abandonware means software that is a dead-end upon its very release, with no hopes or plans for anyone to every build upon it. Abandonware is generally not extensible, follows no good design philosophy that would let someone else build it up, and embodies essentially nothing.

Even a 100-line throwaway Python script has more utility to someone when it is published on PasteBin or whatever. But something like a binary executable released with no source code, with no support, and with no intent by the developer to ever make anything more of it, that’s abandonware.