Personal Knowbase - Can't find your critical notes when you need them?
Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.
Simplenote - The simplest way to keep notes. Light, clean, and free. Simplenote is now available for iOS, Android, Mac, and the web.
Apple Contacts App - Access and edit your contacts from personal, business, and other accounts with the Contacts app.
NoteAway - NoteAway is the simplest, most convenient way to take quick notes on OS X.
Free Address Book - In our contact management software you can store fast and easily name, phone numbers, birthdays, address, company name, city, mobile numbers, insurance and loan info, e-mail addresses.