.NET 2.0 Bluesky client that runs on Windows 98 to 11.

Discord client for old mobile browsers with Wireless Application Protocol 1.x support

TLS for the Internet of Old Things

Gallant 12x22 typeface

NFSv4.1/pNFS client for Windows 7 developed by CITI, UMICH.

Simple PKCS11 provider for TPM chips

History of the AT&T ast-open software repository (including ksh93), reconstructed from various sources

Variant of 4.4BSD Unix for microcontrollers

Material You for Gnome and GTK4 and GTK3

Applies generated libadwaita theme from wallpaper using Material You

4.4BSD Lite Release 2: last Unix operating system from Berkeley

An open-source OS project that aims to provide source and binary compatibility with macOS® and a similar user experience.

Binary Grep

GitHub action to install Cygwin

A UNIX-like kernel for the i386 architecture

Modern and functional CDE desktop based on FVWM

Classic init software for Linux

Scripts for cross-compiling and creating an Hurd system

Test your code in a real OpenBSD virtual machine on GitHub Actions -- QEMU-powered, with SSH and two-way folder sync

Embeddable Linux Kernel Subset - Linux for 8086

A design system for building faithful recreations of old UIs

A port of OpenBSD's doas which runs on FreeBSD, Linux, NetBSD, and illumos

Implementation of the Unix fortune command for displaying a random quotation, for Linux and other systems.

Simulating shitty network connections so you can build better systems.

build-once run-anywhere c library

The Serenity Operating System 🐞

The POSIX / Single UNIX Specification, Version 4 | IEEE Std 1003.1, 2016 Edition

The Traditional Vi (vi with many enhancements from Gunnar Ritter)

A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, MQTTS, POP3, POP3S, RTSP, SCP,…