Some applications for your linux- (and maybe windows-) based PC or handheld/PDA which I have written.
Digital photograph/image management tool and viewer. Additional data is not stored in a picture file itself but in an xml file. It provides an abstraction layer between filesystem organization and album organization, advanced search features, symbolic links, hyperlinks and much more.
Ein Vielzweck-Organizer für den PC oder PDA (z.B. Agenda VR3 oder iPaq)