WinPIM - there is fierce competition out there in the field of personal information management but WinPIM remains one of the best due to it's simple multi-user system and perfect balance between attractive interface and poweful features.
Contact, calendar, appointment and diary are all a breeze to set up and edit (a handy bunch of wizards make sure of this) while offering a superb range of fields to play with.WinPIM allows you to create groups and drag & drop freely to organize large of Contacts. As well as standard links to your browser and e-mail program, searching and dialer WinPIM can also generate useful summaries for your contacts perfect for printing. The Appointments and the Tasks makes your time usage more productive and more rewarding. The Diary supports rich-text format contents, you can even add more than one diary to one day.