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CoCalc

CoCalc (formerly SageMathCloud) is a web-based cloud computing and course management platform designed for computational mathematics. It supports editing of Sage worksheets, LaTeX documents, and Jupyter notebooks within an Ubuntu Linux environment, accessible via terminal with extensive Linux capabilities. CoCalc offers free and paid subscriptions starting at $14/month, providing enhanced storage, computing resources, and internet access. Subscription plans also support course usage, with over 200 courses having incorporated CoCalc for computational and educational tasks.

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Features

CoCalc directly supports Sage worksheets, which interactively evaluate Sage code. The worksheets support Markdown and HTML for decoration, and R, Octave, Cython, Julia and others for programming in addition to Sage. CoCalc supports Jupyter notebooks, which are enhanced with real-time synchronization for collaboration and a history recording function. Additionally, there is also a full LaTeX editor, with collaboration support, a preview of the resulting document and also support for SageTeX. With its online Linux terminal, CoCalc also indirectly supports editing and running many other languages, including Java, C/C++, Perl, Ruby, and other popular languages that can be run on Linux. Other packages can be installed on request.3

Users can have multiple projects on CoCalc, and each project has separate disk space and may be on an entirely different server. Many users can collaborate on a single project, and documents are synced, so multiple users can edit the same file at once, similar to Google Docs.4 All the data on projects is automatically backed up about every five minutes with bup, and snapshots of previous versions are accessible. Through the terminal, files can be tracked using revision control systems like Git.

Development

CoCalc is operated by SageMath Inc. The creator and lead developer of CoCalc is William Stein, a former professor of mathematics at the University of Washington who also created the Sage software system. Initial development was funded by the University of Washington and grants from the National Science Foundation and Google. Now CoCalc is mostly funded by paying users. It is intended as a replacement for sagenb, which also let users edit and share Sage worksheets online.5

References

  1. Stein, William (1 May 2014). "What can SageMathCloud (SMC) do?". Sage: Open Source Mathematics Software. http://sagemath.blogspot.com/2014/05/what-can-sagemathcloud-smc-do.html ↩

  2. "Teaching - sagemathinc/smc". GitHub. Retrieved 6 May 2016. https://github.com/sagemathinc/smc/wiki/Teaching ↩

  3. Stein, William (1 May 2014). "What can SageMathCloud (SMC) do?". Sage: Open Source Mathematics Software. http://sagemath.blogspot.com/2014/05/what-can-sagemathcloud-smc-do.html ↩

  4. "Zulip Chat Archive". leanprover-community.github.io. Retrieved 2023-11-14. https://leanprover-community.github.io/archive/stream/113488-general/topic/CoCalc.html ↩

  5. Stein, William. "Sage Notebook vs. Sagemath Cloud". Sage. Retrieved 11 May 2014. http://sagemath.org/notebook-vs-cloud.html ↩