gruplanr

gruplanr is a web-based, open-source platform for collaborative project planning and scheduling. It is designed to help teams coordinate tasks, timelines, and resources in a single workspace. The project emphasizes configurability, supporting multiple visualization modes such as lists, Kanban boards, and Gantt charts, and it provides tools for dependencies, milestones, and time tracking.

Core features include task management with assignees and roles, dependency linking, calendar and milestone views, resource allocation, and progress reporting. It supports import and export in common formats (CSV, ICS) and offers an API for integrations with calendars, messaging apps, and other productivity tools. A plugin system and themes allow customization and extensions.

gruplanr is designed to be self-hosted, with a cloud option offered by the maintainers. The backend is built with Node.js and PostgreSQL, while the frontend uses modern JavaScript frameworks to provide a responsive interface. The project is released under an open-source license (MIT-style), encouraging community contributions and transparent development.

History and development: The project began in 2019 as a community initiative in Europe, with an initial public release in 2020. It has since reached several major milestones, including version 1.0 in 2021 and version 2.0 in 2023, which introduced a revamped UI and expanded API capabilities. The community maintains a public issue tracker and documentation site.

Reception and usage: gruplanr has been adopted by small and mid-size teams, educational programs, and volunteer organizations seeking a flexible planning tool. Reviewers cite its adaptability and strong data ownership as advantages, while some note a learning curve and performance considerations with very large datasets.

See also: project management software; open-source scheduling tools; list of collaborative software.