SageMath vs StackBlitz

SageMath is free, open-source mathematics software for calculations across algebra, calculus, number theory, cryptography, numerical computation, commutative algebra, group theory, combinatorics and graph theory. It is aimed at mathematicians, researchers and students, and the project identifies education and research as suitable uses. You can work in a browser notebook, at the command line or through a Python library; SageMath can also be embedded in LaTeX documents. It brings together packages including NumPy, SciPy, matplotlib, SymPy, Maxima, GAP, FLINT and R through a common Python-based language, interfaces or wrappers. The software runs on Linux, macOS, Windows, web and self-hosted setups. Windows users are directed to Windows Subsystem for Linux, while the download page points Linux users to installation alternatives because Linux binaries have been discontinued. macOS binaries and Docker images are also listed. SageMath is licensed under GPLv2+ and is listed at free, with installation on unlimited computers and permission to download and redistribute copies.

StackBlitz is a browser-based full-stack web IDE for the JavaScript ecosystem. Its WebContainers run Node.js development environments inside a browser tab, and the service lists millisecond startup and offline work. StackBlitz presents rapid prototyping and coding interviews as use cases. Integrations include a Figma plugin, Storybook addon, and userscript for opening GitHub projects in Codeflow. Viewing and editing projects needs no account, but saving or collaborating requires GitHub. WebContainers depend on SharedArrayBuffer and cross-origin isolation. Enterprise options connect GitHub Enterprise, GitLab, Bitbucket, private npm registries, JFrog Artifactory, and Sonatype Nexus. Enterprise code runs in an isolated browser sandbox with SAML2 single sign-on, an admin portal, and self-hosting on bare metal or in a VPC through Kubernetes. Plans include free access and a 14-day trial; listed plan prices are not provided.