I use GRAMPS for building my family trees, and creating genealogy webpages, but recently I came across a genealogy software package called DOROTREE, that offers some unique features, specifically regarding Hebrew support, Hebrew calendar support (remembrance/yahrzheit dates in English and Hebrew calendar) and recording people lost in the Holocaust.

Does anyone know if there are add-ons available, or projects underway, to provide similar functions for GRAMPS?

Steven BirnamĀ