RT and RTIR are open source ticketing systems designed by Jesse Vincent and Best Practical to help system administrators, helpdesk staff, and CERT teams be more effective. RTIR is based on RT but customized for incident response with features like incident reports, investigations, and network blocks. It provides a workflow and tools to help teams track incidents from initial reports through investigation and resolution. Both systems are free to use and have an active international user and developer community providing support.