Plane

Plane is a project management software company founded in 2019 that builds an open-source alternative to tools like Jira and Linear. The company positions itself around flexibility of deployment, offering cloud-hosted, self-hosted, and air-gapped versions of its product for teams with varying data residency and security requirements.

The core product includes modules for issue tracking, project planning, cycles, and a wiki for documentation, aimed at software development teams. Plane has expanded its positioning to include AI-assisted workflows, marketing its platform as supporting both human teams and AI agents in planning, tracking, and shipping work. The product is distributed both as a hosted SaaS offering and as self-managed software that developers can deploy on their own infrastructure.

Plane's codebase is open source and available on GitHub, where it has attracted a large developer community. The company has raised early-stage venture funding to support product development and go-to-market efforts, though it has not disclosed later funding rounds publicly.