StackBlitz
StackBlitz provides instant dev environments that run in the browser, powered by WebContainers.
Last updated September 11, 2026
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Overview
StackBlitz is a browser-based development environment offering instant dev environments. Its homepage states that all compute occurs inside the browser, powered by WebContainers, a WebAssembly-based micro operating system that boots entire development environments in milliseconds. It also offers Bolt, which turns text into working web apps and handles the code so users can create and launch applications directly from the browser.
Products and positioning
Browser-based instant dev environments with all compute inside the browser, positioned as faster and more secure than local and as an alternative to legacy cloud-based IDEs.
WebContainers
A WebAssembly-based micro operating system that boots entire development environments in milliseconds, securely within a browser tab.
Bolt
Turns text into working web apps, handles the code, and lets users create and launch applications directly from the browser.
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