About StackBlitz
StackBlitz is a collaborative browser-based development environment for web developers. Its pitch is that projects start instantly without local configuration, because everything runs inside the browser tab rather than on a remote server.
That is made possible by WebContainers, a WebAssembly-based micro operating system that boots a full Node.js development environment within the tab. The vendor contrasts this with older cloud IDEs that stream results from remote machines, claiming faster starts, working offline, and easier recovery by refreshing the page. The company also offers Bolt.new, which turns text prompts into working web apps, as well as a WebContainer API, an Enterprise Server product, design system and integrations offerings, and Web Publisher.
StackBlitz is a proprietary hosted service. The site links to a pricing page with details on the available plans.
Key features
- Node.js development inside the browser
- WebContainers boot environments in milliseconds
- Works offline once loaded
- Bolt.new for prompt-to-app generation
- WebContainer API for embedding
- Collaboration features for web teams
Good fit for
- →Sharing a runnable bug reproduction
- →Starting a web project with no local setup
- →Embedding live code examples in documentation
- Tags
- cloud-ide
- webcontainers
- nodejs
- web-development
- browser
- bolt
- collaboration
StackBlitz: questions and answers
- What is StackBlitz used for?
- StackBlitz is a browser-based IDE that runs Node.js projects locally in the tab through WebContainers, and it is the home of Bolt.new. It is a good fit for sharing a runnable bug reproduction, starting a web project with no local setup and embedding live code examples in documentation.
- Is StackBlitz free?
- Yes. StackBlitz has a free plan.
- Is StackBlitz open source?
- No. StackBlitz is proprietary (closed-source) software. Open-source alternatives to StackBlitz include code-server and Coder.
- What are some alternatives to StackBlitz?
- StackBlitz competes with CodeSandbox, Replit and GitHub Codespaces. For open-source options, see Enlisted's ranked list of open-source StackBlitz alternatives.
Open-source alternatives to StackBlitz
See all
code-server
Developer Tools
VS Code in the browser
MITvs Replit★ 80k
Coder
Developer Tools
Secure environments for developers and their agents
AGPL-3.0vs CodeSandbox★ 17k
Zed
Developer Tools
Code at the speed of thought – Zed is a high-performance, multiplayer code editor from the
OSSvs Sublime Text★ 91k
Assemble
Developer Tools
Get the rocks out of your socks! Assemble makes you fast at web development! Used by thous
MITvs GitHub Pages★ 4.3k
Visual Studio Code
Developer Tools
Visual Studio Code
MITvs Sublime Text★ 193k
Godot
Developer Tools
Godot Engine – Multi-platform 2D and 3D game engine
MITvs Unity★ 118k
SaaS alternatives to StackBlitz
See allCodeSandbox
Developer Tools
Cloud development environments and browser-based sandboxes for web projects
SaaS
Replit
AI Tools
Browser-based coding platform with an AI agent that builds and hosts apps
SaaS
GitHub Codespaces
Developer Tools
Cloud-hosted development environments launched from GitHub repositories
SaaS
Ona
Developer Tools
Cloud development environments and software engineering agents, formerly Gitpod
SaaS
CodePen
Developer Tools
Online editor and community for front-end HTML, CSS and JavaScript snippets
SaaS
JSFiddle
Developer Tools
Online editor for testing and sharing HTML, CSS and JavaScript snippets
SaaS

