GNOME Planner is a cross-platform project management tool based on the Work breakdown structure (WBS). Developed by Richard Hult and Mikael Hallendal, Imendio
License: Open Source
GNOME Planner is an open-source project management tool that is user-friendly and cross-platform, making it suitable for simpler project management needs. OmniPlan, on the other hand, is a powerful Mac-only application that offers advanced features and integrations, but comes with a higher price and complexity.