Kolibri OS: fits on a floppy disk, programmed using interrupts

1. v86

   1 161 20,103 9.5 JavaScript

   x86 PC emulator and x86-to-wasm JIT, running in the browser

   

   Trying it out in https://copy.sh/v86/?profile=kolibrios , it's also clearly a love letter to Windows 95 in particular. That could be an unstated goal here, create a very particular PC experience under very particular constraints. I don't know anything about the creator but it's very possible that this kind of work was actually their career in the 90s.

   It's incredible how much work was done. Maybe this should be an internet curiosity like how TempleOS has become, though Terry's personality was a unique factor.

2. SaaSHub

   www.saashub.com featured

   SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

   

3. OberonSystem3

   2 7 97 6.9 Modula-2

   A cross-platform version of the ETH Oberon System 3 compatible with the Oberon+ compiler and IDE

   Even if so, ARM or RISC-V are more attractive architectures in many respects; and there are proof of concepts demonstrating that very lean operating systems with GUIs can be built with high-level languages, even with GC (see e.g. https://github.com/rochus-keller/OberonSystem3/); so writing such a thing in assembler is certainly impressive, but also a cul-de-sac.

4. wrench

   3 4 118 8.1 C++

   practical embedded script interpreter (by jingoro2112)

   Doesn't look promissing, sorry. Was looking and looking, but where is the GUI-based OS?

   Nowadays we can use LVGL and C++ to write apps, or run script based C code using interpreters like Wrench: https://github.com/jingoro2112/wrench

   What I'm missing is an GUI-based OS like Kolibri to launch apps.

5. OPS

   4 12 1,315 8.4 Go

   ops - build and run nanos unikernels

   

   I work with https://nanos.org && https://ops.city - we can run thousands of these on commodity hardware.

6. nanos

   5 30 2,687 9.2 C

   A kernel designed to run one and only one application in a virtualized environment

   

   I work with https://nanos.org && https://ops.city - we can run thousands of these on commodity hardware.

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