SerenityOS/serenity

90s-style Unix-like OS for modern PCs

macOS in Docker
sickcodes/Docker-OSX
modern alternatives for classic unix commands
ibraheemdev/modern-unix
personal cloud OS for home servers and Zima hardware
IceWhaleTech/ZimaOS
List of open-source alternatives to popular SaaS products
RunaCapital/awesome-oss-alternatives
Cloud-based internet OS for files, apps, and web development
HeyPuter/puter
system design case studies and fundamentals for real-world architectures
systemdesign42/system-design
Linux OS for running Home Assistant on Raspberry Pi, NUC, and more
home-assistant/operating-system
Ubuntu-based Linux OS with a Windows-like interface, easy for new users
Anduin2017/AnduinOS
open source platform for building healthcare apps
medplum/medplum
NES-style CSS framework for retro 8-bit web designs
nostalgic-css/NES.css