Jira

Linear is a project management tool that helps teams track and manage their work. It provides a fully managed service with features like issue tracking, project management, and collaboration.

Taiga is an agile project management tool based on the Kanban and Scrum methodologies. Designed for cross-functional agile teams, it provides a beautiful, intuitive interface for managing projects with comprehensive features for sprint planning, issue tracking, and team collaboration.

Plane is a simple, extensible, open-source project management tool that helps track issues, epics, and product roadmaps in the simplest way possible. Designed as an alternative to JIRA, Linear, and Height, it provides a clean, modern interface for agile project management.