TL:DR; With SF-Fixrech you have a very fast and easy way to create and print invoices in a few minutes.
With SF-Fixrech you have a very fast and easy way to create and print invoices in a few minutes. They only give the address and up to 24 articles with price and number and SF-Fixrech takes care of the rest.
Customer Support Organizer Pro: simple database management system that helps you to organize, track, and manage your customer support activities.
Jitbit Help-Desk - customer support and knowledge-base software based on ASP.NET. Jitbit HelpDesk is a web based help desk support software ("trouble ticket software" or "issue tracking software"). Easy to install, accessible from anywhere via Web.
VerifyMyPC is the change tracking and management tool that watches for important changes to computers running Microsoft Windows NT/2000/XP/2003/Vista. Reduce technical support times from 2 hours to 5 minutes by tracking important changes to systems.