@niconiconi other places where you can find free standards:
- ECMA for lots of computer stuff, including the ISO9660 filesystem, physical specs for floppy discs, ANSI escape sequences, JSON (ECMA-404), the C# language, the windows 3.11 API, … (several are republications of ANSI or ISO standards, but for free)
- DVB for all things TV broadcast and satellite communications (famous for the way they encapsulated IP packets in MPEG frames to repurpose their TV stuff into internet stuff)