Open Document Format is the official document format of many governments for the reason that it is interoperable across different office suites, is not locked into any brand or vendor, and is an open standard which can providing reading and editing compatibility in the future decades (for archiving).
One of the best known office suites that supports it by default is LibreOffice, but Microsoft Office and Google Docs also provide some measure of support, but more as an afterthought than as their primary format standard.
See
OpenDocument Format 1.3 Approved As OASIS Standard - Phoronix#
technology #
interoperability #
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