Download the zip, unzip it, and open index.html in Chrome, Edge or Firefox — or serve the folder from any web server (or localhost) for the installable, offline-capable version. Your data stays in that browser exactly as with the online version.
Encrypted backups and exports open only with the password they were made with. Keep your file passwords in a password manager — nobody can recover them.
Download Gantt Forge (ganttforge-latest.zip)
Release history and checksums: CHANGELOG. Licence: MIT — see Licence & credits (also as PDF).