Evercontact - Your contacts always up to date and automatically with Evercontact.
Philasmicos Contacts 2 - Philasmicos Contacts is a professional business relationships management system for macOS X.
CONTACTBOX - CONTACTBOX combines the simplicity of an address book with effective functions of a CRM system.
iDatabase for Mac - The intuitive personal database manager.
Bigin by Zoho CRM - Pipeline-centric CRM built and priced for small businesses
Windows Contacts - Windows has many extraordinary organizers, and in the event that you include distributed storage, then you presumably have more.