Apache poi provides a java api for manipulating various file formats based upon the office open xml standards (ooxml) and microsoft's ole 2 compound document format (ole2).

apache poi supports the following formats:
* word (doc, docx)
* excel (xls, xlsx)
* powerpoint (ppt, pptx)
* visio (vsd)
* publisher (pub)
* outlook
* tnef (transport neutral encoding format)