software

In 1984, the University of Tokyo launched the ambitious TRON project to create a vertically integrated, open operating system family for everything from embedded devices to desktop PCs, with the desktop variant BTRON featuring an advanced hypermedia document model and extensive multi-language character support. Despite government backing and industry adoption plans, the U.S. government cited TRON in a 1989 trade barrier report, which contributed to reputational damage and withdrawal of Japanese manufacturers from BTRON’s development, effectively ending its mainstream adoption; meanwhile, TRON’s embedded variant, ITRON, quietly became a dominant OS in billions of devices worldwide. Controversially, SoftBank founder Masayoshi Son is alleged to have lobbied against BTRON’s adoption, leveraging the U.S. report to hinder the project, though the embedded TRON systems continue to form critical infrastructure in modern electronics.

https://www.xda-developers.com/japan-tried-build-operating-system-entire-world-us-government-intervened/

os8088 is a graphical operating system that boots directly from a floppy on an Intel 8086/8088-based IBM PC/XT, providing a Macintosh System 1-style desktop with overlapping windows, pull-down menus, and pre-emptive multitasking—features not present in the original 1984 Macintosh. Written entirely in real-mode assembly and fitting within 256KB of RAM, it supports VGA, Hercules, and CGA displays, runs multiple loadable programs simultaneously, and includes applications like Minesweeper, a text editor, and a MOD music player. This hobby project revives an early Macintosh-like GUI on original-era hardware without relying on DOS, offering a modern take on retro computing through open-source code and real hardware demonstrations.

https://os8088.com/