The Gantt Forge client (the app you open in your browser or download as a folder) is free software. You may use, copy, modify, self-host and redistribute it, provided the copyright notice and this licence text stay with it. The name "Gantt Forge" and the diamond logo are trademarks: a copy or fork must use a different name.
MIT License Copyright (c) 2026 Kannan Subramanian <codingkansvce@gmail.com> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. --- Scope: this license covers the Gantt Forge client (index.html, sw.js, manifest.json, icon.svg) — the free, local-first product. Third-party libraries in ./vendor/ and the inline icon sheet carry their own licenses (SheetJS xlsx: Apache-2.0; PptxGenJS: MIT; docx: MIT; Lucide icons: ISC) — see license.html / LICENSE.pdf in the package for every notice in full. The GanttForge+ hosted service and its server-side code (./plus/) are NOT covered by this license and are proprietary unless stated otherwise in that directory.
Gantt Forge is supplied on an "as is, where is" basis. It is provided in its current state, with whatever faults it has, and with no promise of any kind — express or implied — that it is fit for your purpose, accurate, uninterrupted, secure, or free of defects.
You use it entirely at your own risk. To the fullest extent permitted by law, the author and copyright holders accept no responsibility, ownership or liability whatsoever for any loss or damage arising out of or connected with your use of it, including but not limited to:
This applies whether the claim is made in contract, tort (including negligence), breach of statutory duty or otherwise, and whether or not the author was advised of the possibility of such loss.
Your data and your backups are your responsibility. Gantt Forge stores your work in your own browser. You are responsible for exporting and keeping your own backups, and for checking that anything the software produces is correct before you rely on it. Verify before you commit.
Nothing here excludes or limits liability where it cannot lawfully be excluded or limited. If any part of this section is held unenforceable, the remainder continues to apply. Some jurisdictions do not allow the exclusion of implied warranties or of certain liabilities, so some of the above may not apply to you; in that case liability is limited to the minimum permitted by law.
The same terms apply to the Gantt Forge+ hosted tier, in addition to its own Terms.
Gantt Forge ships these components unmodified, from its own origin (never from a CDN), so the app makes no third-party requests. Each is the work of its own authors and is used under its own licence, reproduced below with thanks.
| Component | Version | Licence | Used for |
|---|---|---|---|
SheetJS Community Edition (xlsx.full.min.js) | 0.18.5 | Apache-2.0 | Excel / CSV import and export |
PptxGenJS (pptxgen.bundle.js) | 4.0.1 | MIT | PowerPoint export |
docx (docx.umd.js) | 8.5.0 | MIT | Word export |
| Lucide icons (129 symbols inlined) | 1.43.0 | ISC | Interface icons — lucide.dev |
Copyright (C) 2012-present SheetJS LLC
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. The full text of the Apache License 2.0 is embedded in the header of vendor/xlsx.full.min.js.
MIT License Copyright (c) 2015-present Brent Ely, gitbrent@gmail.com Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
MIT License Copyright (c) 2015-present Dolan Miu Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
ISC License Copyright (c) for portions of Lucide are held by Cole Bemis 2013-2022 as part of Feather (MIT). All other copyright (c) for Lucide are held by Lucide Contributors 2022. Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
The hosted tier (the "+" server) is separate, opt-in and proprietary — all rights reserved. It is never included in the free download. Using it is governed by the Terms and Privacy Policy.
The interface, the scheduling engine, the report and export builders, the icon sheet assembly and the documentation are original work © 2026 Kannan Subramanian, released under the MIT License above. No fonts are bundled; the app uses the fonts already on your device.