As we know esri shared their library which makes it possible to work with FileGDB format without using ArcObjects. So the question is what application could be created in order to help GIS specialist to solve their tasks realted with this format? For instance, I have an idea to create an opensource tool(GPL) which converts FileGDB to Shapefile (or other format) and backwards. Will it be in the demand? or perhaps somebody have already developed such tool? I will be grateful for any ideas about that (as well as collaboration ideas).