Calibro Store
Libronet
Calibre-go
Litlcode Studios
Calibre Sync
Seng Jea Lee
FBReader: Calibre connection
FBReader.ORG Limited
eBook Reader
MobileAppForYou
PDF Reader
Pinetco Infotech
Mangabuddy reader
Mangabuddy
Calibre Companion Demo Version
Samuel Cohen
Endless Reader
Originator Inc.