A dutch startup called Tupil just announced that their first commercial application written in Haskell has gone live.
Tupil describe themselves as:
Tupil is Chris Eidhof and Eelco Lempsink. We code for a living, using functional programming languages like Haskell. Technology is our passion and we just love building great software tools. After working for years as web developers at very nice companies, we decided to go solo, together.
Credible success stories of bleeding-edge functional languages like Haskell being used in industry are always great to see. Keep up the good work!