Microsoft just open-sourced 6502 BASIC (BASIC M6502 8K VER 1.1) from 1978. The code powered the Commodore PET, VIC-20, and ...

Open-source software allows anyone to modify, enhance, or view the source code behind it. It can encourage collaboration in development.

Tesla is still a long way from fully releasing its cars' full open-source programs and Linux operating system code, but it's on its way.

An open source web server, a software foundation, and a permissive license that, unlike the GPL, allows source code to be mixed into non-open source, commercial code.

With 14 million users, Microsoft's open source cross-platform code editor Visual Studio Code is one of its key tools for keeping developers engaged with its future in the cloud.