Also ECMA (C# and JavaScr... er, ECMAScript) which provides standards at no cost vs ANSI (no notable language specs since C and Pascal) which charges a fee.
Last year I finished the school year early because of the coronavirus lockdown and had too much free time - so I wrote an interpreter for CLR bytecode (https://github.com/Leowbattle/clr_lite). The ECMA-335 standard contained everything I needed to know for that project: documentation of the EXE format, VM instructions, etc.
I learned a lot doing this project, and I would never have been able to do it without free access to the standard. So I think Tim is right to recognise the value open standards provide to hobbyist programmers.
ECMAScript is nowadays amusing because the ISO standard for it is literally a single page document… that normatively references the ECMA published document.
