The Office Open XML format (OOXML), is an open and free document file format for saving and exchanging editable office documents such as text documents (including memos, reports, and books), spreadsheets, charts, and presentations.
The following tables list applications supporting a version of the Office Open XML standard (ECMA-376 and ISO/IEC 29500:2008).
Other applications
Besides word processors, other programs can and do support the Office Open XML text format. See the list of software that supports Office Open XML for more.
References
Comparison of Office Open XML software Wikipedia(Text) CC BY-SA