Evercontact - Your contacts always up to date and automatically with Evercontact.
Personal Knowbase - Can't find your critical notes when you need them?
Pobuca Connect - Connect with your contacts.
Simplenote - The simplest way to keep notes. Light, clean, and free. Simplenote is now available for iOS, Android, Mac, and the web.
CRM-gx - Contact Management
NoteAway - NoteAway is the simplest, most convenient way to take quick notes on OS X.