Tag customer relationship manager

Office Autopilot - if you have the funds - this one is INSANELY awesome - it integrates your contact management, payment processing, automated marketing, leads & lead capture forms, task management, affiliate management, and more.

Oprius is what I use to manage my clients, sales, leads, some autoresponders, task management, contact management, important emails, small landing pages, and it also integrates seamlessly with my billing system - Yeah - it pretty much runs my entire life