It is always great to see the adoption of your open source project at large enterprises. It is even better when you receive positive feedback from those organizations. Without a doubt, it is best when those enterprises talk publicly about their positive experience.
EclipseCon Europe 2013 was the venue where Stefan Milchram of AMOS (Allianz Managed Operations and Services) reported about their use of single sourcing with Eclipse RCP and RAP in a large integrated insurance system. His slides provide a great experience report for the project and discuss the issues they encountered - and how they solved them.
It was a great talk and its a worthwhile read for everybody considering single sourcing. Thanks to Stefan for sharing!
 ABS on RAP, Stefan Milchram, AMOS Austria, https://www.eclipsecon.org/europe2013/single-sourcing-web-and-rich-client-using-rap
 Sponsored Open Source Development, https://eclipsesource.com/en/services/implementation/open-source/