Google added OpenDocument format to the list of supported documents. OpenDocument is supported by important office suites like OpenOffice.org, Star Office, KOffice, but also by Google Docs & Spreadsheets. OpenDocument can be used to store many kinds of files, including documents (.odt), spreadsheets (.ods) and presentations (.odp).
Google's filetype: operator allows you to restrict the search results to files that have a specific extension. This table shows the number of files from Google's index for Open Office and Microsoft Office:
| File types | Open Office | Microsoft Office |
| documents | 88,200 | 42,300,000 |
| spreadsheets | 19,700 | 15,600,000 |
| presentations | 42,300 | 13,800,000 |