This article is a comparison of notable issue tracking systems used primarily for help desks and service desks rather than for bug tracking or project management.
System Creator License Implementation language(s) Back end Launch Date Faveo Helpdesk Ladybird Web Solution Proprietary PHP MySQL 2015 GLPI INDEPNET GPL PHP MySQL 2003 HEAT FrontRange Solutions Proprietary .NET Microsoft SQL Server, Oracle 1990 HelpDesk Text Proprietary JavaScript, Node.js MySQL, PostgreSQL 2019 Jira Service Management Atlassian Proprietary, Free for non-commercial use; hosted & on-premises Java MySQL, PostgreSQL, Oracle, Microsoft SQL Server 2003 OTRS OTRS Proprietary Perl MySQL, PostgreSQL, Oracle, Microsoft SQL Server 2001 Znuny Znuny GmbH GPL-3.0 Perl MySQL, PostgreSQL, Oracle, Microsoft SQL Server 2021 Request Tracker Best Practical Solutions, LLC GPL Perl MySQL, PostgreSQL, Oracle 1999-10-13 Roundup Roundup-Team MIT, Zope Python MySQL, PostgreSQL, SQLite, Berkeley DB 2001-08-18 Spiceworks Spiceworks IT Software Proprietary; free for use Ruby sqlite 2006 Supportworks Hornbill Systems Proprietary Visual C++ and PHP Microsoft SQL Server, MySQL, Oracle, Sybase 1994 SysAid SysAid Technologies Proprietary Java, C# MySQL, Derby, Oracle, Microsoft SQL Server 2002 Tracker Automation Centre Proprietary Groupware, requires Lotus Notes IBM Lotus Domino 2001 TrackerSuite.Net Automation Centre Proprietary C# Microsoft SQL Server 2006 Trac Edgewall Software BSD-3-Clause Python MySQL, PostgreSQL 2004 Zammad Zammad GmbH AGPL v3 Ruby MySQL, PostgreSQL 2016 Zendesk Zendesk, Inc. Proprietary Ruby MySQL, Amazon AWS, Amazon Redshift 2007
See also Comparison of issue-tracking systems Networked Help Desk OSS through Java