OpenProject Overview
OpenProject is a free, open-source project-management platform for Windows, macOS, and Linux (run as a web application) that offers a self-hostable alternative to commercial PM tools, valued by organizations that want control over their data. It supports classic and agile project management with work packages, Gantt charts (timelines), boards for Scrum and Kanban, backlogs and sprints, time and cost tracking, wikis, and team collaboration. Because it can be self-hosted, it suits teams with privacy, security, or compliance requirements, and a cloud-hosted option is also available. It scales from small teams to enterprises. The platform is installed on a server you control. It supports agile boards and traditional Gantt scheduling in one place, plus a REST API for building integrations. The official OpenProject download is linked on this page, straight from OpenProject.