NameBase is a program that keeps track of names, addresses, phone numbers, dates, notes, and reminders.
Here is what Ziff-Davis (ZDNet) says about NameBase. The new version 3 is even better.
"NameBase for Windows is a simple program for organizing and maintaining information about your contacts. NameBase uses a Microsoft Access Database to store names, addresses, phone numbers, dates, notes, and other information about persons and organizations. A unique feature allows you to assign one or more categories to each entry, and then view each category separately or combined with others. You can use sophisticated filtering expressions to isolate only the entries you want to work on. You can sort on any field, search for any string, print full-size or pocket-size address books, print mailing labels, envelopes, and more. NameBase presents an intuitive and easy-to-use interface, and comes with a well-organized and informative online help file."
View some of the NameBase screens, read a more detailed program description, or order NameBase.