OpenTOPAS Organization
Browse the TOPAS echosystem, release, and issue tracker inside the official GitHub organization.
Download Center
Choose the distribution that suits your needs.
Docker Image
Pull the ready-to-run container from Docker Hub for reproducible environments and CI pipelines.
TOPAS Courses
Access previous online course materials, for instructor-led or self-paced learning.
Introductory Video
Watch the grant-funded overview recorded during the 2018-2024 ITCR program to see OpenTOPAS in action.
View the intro video →
Produced as part of the NCI ITCR initiative.
License & Usage
OpenTOPAS is released under the MIT License. You may use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, provided that the copyright notice below appears in all copies or substantial portions of the Software.
Copyright 2025 The TOPAS Collaboration
Copyright 2022 The TOPAS Collaboration
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.