The ODF plugfest is an ongoing series of vendor-neutral events, bringing together implementers and stakeholders of the standard. The goal is to achieve maximum interoperability by running scenario-based tests in a hands-on lab and discuss new and proposed features of the ODF specification.

This 4th edition is jointly organized by the Federal State, the Regions and Communities of Belgium.

Participants include Ars Aperta/Itaapy (lpOD), BTR Services (LetterGen), DiaLOGIKa (ODF-OOXML converter), Google (GDocs), IBM (Symphony), KO GmbH (KOffice), KU Leuven (Odt2Braille), LoneWolves (Officeshots), Microsoft (MS-Office), OpenDocSociety, Open Framework Systems (OFS Collab), Oracle (OpenOffice.org) and Pincette (OdfToEpub)