Let's not forget these Alternate OS for old systems.

* Dave Braun at Intel wrote UZI (a unix v7 ish system for Z80 processors, and public domain) - one of the gnu project mistakes was not building off this but using Mach
http://www.dougbraun.com/uzi.html
* Steve Hosgood at UW Swansea wrote OMU - a 6809 and later 68000 based platform with a unixlike api
http://tallyho.bc.nu/~steve/
* Jawaid Bazyar of EGO systems wrote GNO/ME a unix like Multitasking Environment for the APPLE IIgs 65816 computers.
http://www.gno.org
* commodore/64 - Daniel Dallmann, lunix
http://lng.sourceforge.net/
* msx - Adriano C. R. da Cunha, uzix
http://uzix.sourceforge.net/

Also

* C64 GEOS

* Contiki operating system and desktop environment for the Commodore 64, with ports to a bunch of other platforms such as the 8-bit Nintendo Entertainment System, the VIC-20, 8-bit Ataris, Atari Jaguar, the Tandy CoCo, and the Apple ][ under development. The Contiki system includes the following: a multi-tasking kernel, a windowing system and themeable GUI toolkit, a screen saver, a TCP/IP stack, a personal web server, and a web browser. The Contiki web browser, which is likely to be the world's smallest browser given its extremely small memory footprint, is the world's first true web browser for an 8-bit system and probably makes the 21 years old Commodore 64 the oldest system ever to run a real web browser! All of the above programs are contained in a single, fully self-contained, 42 kilobytes large binary. The entire Contiki system with all programs running simultaneously is comfortable in 64 kilobytes of memory.

FYI: I'm a OS and Retro System Freak OK...
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The Contiki OS is really cool, and I was taking about it in another thread here, where the website c64web is actually being served using a C64 and this OS. Really cool stuff.
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I've seen a site hosted by an AppleII running Contiki.

Maybe the internet will soon be taken over by 8 and 16 bit computers.
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That'll be the day Retrosteve rules the world!!
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Are you still running your site on your old Mac Steve? Or did you give up on that? Might be cool for you to try alternative OSs on an old mac or Amiga you might have spare to see how much more performance you can get out of the hardware compared to the default OS.
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I sold the LCII a while ago.

I will have to have ago at hosting a site from the amiga sometime.
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That's one of the things I keep promising myself I will do if I ever get time.
Keep downloading the latest packages about every six months and that's it.
Never even get round to unpacking them.

Still involved in testing a lot of OS4 stuff for various devs, so can't see me getting around to it anytime soon.

With OS4 classic being new and there not being many classic OS4 users, there are always devs on the lookout for testers for OS4 proggies.

Obviously it's in my own interest to help out and in a lot of cases, it does mean I get stuff earlier than most.
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