As Filark says there are the names of apps that work scattered all through the forum and sometimes it is a specific version that works. The best place I've found for older versions of free apps is
http://www.freewarelovers.com/android
You must remember that Android is primarily a phone operating system and many of the apps are written to make use of the hardware specific to a smart phone, much of that hardware the eDGe does not have so anything relying on hardware that isn't there won't work.