Today at the SharePoint Evolutions 2013 Conference I announced my latest pet project called Open WOPI. Open WOPI is an open WOPI client that allows you to extend SharePoint 2013, Exchange 2013 and Lync 2013 with file previews and editors for any type of file formats.


The project is now (at least very, very soon) available to download from and is published under the Ms-PL license. This is currently an early beta (or what you would like to call it) but will be improved over time.


Open WOPI is based on the [MS-WOP] protocol, published by Microsoft, and used by Office Web Apps Server 2013, SharePoint 2013, Exchange 2013 and Lync 2013.

File format support

Currently Open WOPI has support for the following formats:

  • GPX - Uses Bing maps
  • TXT - Viewing and editing
  • VSDX - Thumbnail viewing

More formats are in the works…


Not much yet, but I’ll try to add that over the next few weeks.

More information

For more information, feedback and ideas about the project please refer to the Codeplex site: I’d like to hear what file formats you would like Open WOPI to support.

The slides from the presentation at the SharePoint Evolutions conference and links can be found here.


Thanks to Sam Dolan, aka Pinkpetrol, for the really cool logo for Open WOPI.