GLPI (Gestion Libre de Parc Informatique) is an information resource manager with an administration interface. You can use it to build a database with an inventory for your company (computers, software, printers, etc.). It has functions to make the daily life of the administrators easier, including a job/request tracking system with mail notification and methods to build a database with basic information about your network topology. It provides a precise inventory of all the technical resources (all their characteristics are stored in a database) and management and history of the maintenance actions and the bound procedures. It is dynamic and is directly connected to the users, who can post requests to the technicians.
WebIssues is a multi-platform system for issue tracking and team collaboration. It can be used to store, share, and track issues with various attributes, description, comments, and file attachments. It is easy to install and use but has many capabilities and is highly customizable. Desktop and Web clients are provided.
Interleave is a Web-enabled business process automation application. It enables you to model your business process like purchasing, project management, and contract management and make it available online. It's meant to replace processes which currently rely on paper, email, or spreadsheets and it has a very good workflow engine. You can create invoices, export to RTF and PDF based on templates, export to MS Excel, interpret incoming email, and publish your data to the Web.
The Web Help Desk is customizable cross-platform help desk software. It includes an iPhone app, email-to-ticket conversion, LDAP and Active Directory integration, trouble ticket email notifications, support for billable hours, a self-service knowledge base, asset management components, and much more. It has permissions-based access, including a customer service Web portal, help desk technicians, and help desk administrators.
VisionProject is a powerful Web-based project management tool and issue tracking system that also includes modules for helpdesk/support, time management, document management, and much more. VisionProject is built to be easy to use and customizable. The extensive functionality offered includes drag-and-drop, search possibilities also within the attached documents, sub-items, a Web portal for external customers, support for popular concepts used in project management and IT service management, such as ITIL, Scrum, Lean, Waterfall, etc.