GtkEveMon is a skill monitoring stand-alone application for GNU/Linux systems. It is written in C++ and uses GTK for the GUI. You can monitor your current skills and your skill training process without starting EVE-Online, but (of course) you still need a working Internet connection.
Dream Diary is an encrypted diary application. It allows styled text with embedded images which the application can download from the Web. It indexes words to make it easy to search on words or phrases. It uses strong encryption (Blowfish) on all diary entries. Although it was originally designed for recording dreams, it can be used for any kind of diary or notebook.