About OTRS
OTRS is an Open source Ticket Request System (also well known as trouble ticket system) with many features to manage customer telephone calls and e-mails.
The system is built to allow your support, sales, pre-sales, billing, internal IT, helpdesk, etc. department to react quickly to inbound inquiries.
OTRS today is installed in over 70,000 sites in 24 languages.
Who is Using OTRS around the World?
Commerzbank
NASA Ames Research Center
Nokia
Toshiba Europe
Siemens
T-Systems Enterprise Services
Deutsche Post Worldnet
Deutsche Lufthansa
NASA Goddard Space Flight Center
Porsche Hungaria
Fujitsu Microelectronics America, Inc.
Mercer Human Resource Consulting
Amnesty International
University of Florida
See full listing here