Centric, one of the few suppliers of software stacks for managing municipalities and other government outfits in the Netherlands, has announced support for ODF (and OOXML) throughout it's product suite.
The announcement follows after a row last year with the municipality of Heerenveen. After switching to OpenOffice, Heerenveen complained about the lack of interest by Centric in enabling ODF support for it's Doc4all application. Heerenveen let an external programmer write the required functionality.
GetronicsPinkRoccade, another major player in the Netherlands claims it has been supporting ODF for three years already. Searching for any references on it's site either through Google or using the local site search did not return any mention of ODF by GetronicsPinkRoccade though.