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Collaborative Calculation

CoCalc is web-based software that enables collaboration in research, teaching, and scientific publishing. It includes Jupyter Notebooks, Sage Worksheets, a LaTeX Editor and a Linux Terminal to help people work together in real time from different locations. It also has a Computational Whiteboard for expressing and sharing ideas and running code. It is available for free and can be upgraded for internet access, better hosting quality, and other features. It can also be used for teaching courses with flexible course license options. It is also possible to run CoCalc on your own infrastructure.

CoCalc supports sophisticated calculations that arise in teaching, research, and authoring documents. This includes working with the full data science and scientific Python stack, SageMath, Julia, R Statistics, Octave, and much more. It also offers capabilities to author documents in LaTeX, R/knitr and Markdown, storing and organizing files, a web-based Linux Terminal, an X11 graphical desktop, and communication tools like a chatrooms, course management and more. It is the best choice for teaching remote scientific courses.


Install CoCalc on your server or computer

You can easily use CoCalc on your own computer for free by running a Docker image.


CoCalc was formerly called SageMathCloud. It started to offer way more than just SageMath and hence outgrew itself. The name was coined in fall 2016 and changed around spring 2017.



New -- Feb 2022: If you want to work on something at, contact us, and we might be able to pay you!


  • Harald Schilly

  • Hal Snyder

  • William Stein

  • Travis Scholl

  • John Jeng

  • Greg Bard

  • Rob Beezer

  • Keith Clawson

  • Tim Clemans

  • Andy Huchala

  • Jon Lee

  • Simon Luu

  • Nicholas Ruhland

  • Todd Zimmerman

... and many others: See


The copyright of CoCalc is owned by SageMath, Inc., and the source code here is released under the GNU Affero General Public License version 3+ subject to the "Commons Clause" License Condition v1.0.

See the included file and Commons Clause.

None of the frontend or server dependencies of CoCalc are themselves GPL licensed; they all have non-viral liberal licenses. If want to host your own CoCalc at a company, and need a different AGPL-free license, please contact [email protected].

To clarify the above in relation to the "commons clause":

  • you can setup CoCalc at your own educational institution for teaching and research

  • any kind of work you do on CoCalc itself is not impacted

  • if you are unsure about whether your use of CoCalc is not allowed by "commons clause", do not hesitate to email us at [email protected].


"CoCalc" is a registered trademark of SageMath, Inc.


The scripts here might be helpful.  We do most of our development of CoCalc on itself. CoCalc requires npm version at least 7.



We are grateful to BrowserStack for providing infrastructure to test CoCalc.


We thank Google for donating over $150K in cloud credits since 2014 to support this project.