Customer Manager plugin by Ryan Bayne is a tool for not only keeping your records but using them to give customers the best service.
There is an admin side to the plugin and a customer side however administrations also have their own customer pages. So far it includes a ticket service and ability to assign products to customers accounts, giving them access to that product. If you use eStore there is an intigration option to import products and customers from this great shopping cart. WordPress profiles will automatically be created for each new eStore customer imported.
This is just the beginning. WordPress Customer Manager will grow to intigrate all popular plugins and act as a central point of management for your online enterprises. I aim to make it support WebTechGlobal and so it will continue to improve as long as WTG exists.