OASIS
Definition
- OASIS is a not-for-profit, global consortium that drives the development, convergence and adoption of e-business standards.
(DSchneider would add "not just e-business", e.g. document standards are useful to the whole world ...)
OASIS standards
XML/SGML Document standards
XML
- Relax NG: The best XML schema language there is. XML Schema may be great to formalize complicated webservices or database schemas, but its overkill for most needs. DTDs, on the other hand lack some power.
Other
- Lots, e.g. various webservices