Track Software Sales, Auto Email Merge, Bug/Request Tracking - Windows Shareware $49.99. Userbase is designed to allow the software author to easily Track your Software Sales, Supports Armadillo & Custom Key generators, Auto Email Merge, Bug & Enhancement Request Tracking, Post data to a Webserver CGI, ISAPI or ASP Application, Send emails,newsletters to users based on product and/or version #, Track registration fees and taxes, Track Fraudulent users and registration id's, Reports and more