Jira is a popular issue-tracking and project-management tool developed by Atlassian that is widely used by software development teams. Jira allows teams to plan, track, and manage their projects by creating and organizing tasks, bugs, and issues. Jira uses agile methodologies, such as Scrum and Kanban, to help teams work collaboratively and efficiently. It also provides advanced reporting and analytics features that help project managers keep track of team performance and project progress.