21st

21st

21st.dev
+
+

Related Products

  • Apify
    1,175 Ratings
    Visit Website
  • Twilio
    1,373 Ratings
    Visit Website
  • Retool
    567 Ratings
    Visit Website
  • Google Cloud Run
    325 Ratings
    Visit Website
  • JetBrains Junie
    12 Ratings
    Visit Website
  • Viktor
    2 Ratings
    Visit Website
  • Pipefy
    591 Ratings
    Visit Website
  • Windsurf Editor
    161 Ratings
    Visit Website
  • Gearset
    249 Ratings
    Visit Website
  • Vertex AI
    944 Ratings
    Visit Website

About

21st is a developer platform that provides the fastest way to add AI agents directly into applications. The platform offers an SDK that allows developers to define, deploy, and run AI agents with minimal infrastructure setup. Developers can integrate agents using popular frameworks such as Next.js, React, TypeScript, Python, and Node.js. 21st includes built-in features like chat interfaces, session history, tool execution, memory, and real-time streaming responses. The platform also manages backend components such as sandboxed execution environments, authentication, rate limits, and observability. With support for Claude Code and Codex runtimes, developers can build agents that interact with tools, files, and APIs securely. By handling infrastructure and deployment automatically, 21st enables teams to launch production-ready AI agents quickly.

About

WebContainers, developed by StackBlitz, are a browser-based runtime environment that enables the execution of Node.js applications and operating system commands directly within a web browser tab. This technology allows developers to build instant, interactive coding experiences, from tutorials to full-fledged integrated development environments, without the need for local setups or cloud-based virtual machines. By running entirely client-side, WebContainers offer unmatched user experiences with zero latency, offline capabilities, and enhanced security, as they eliminate the risks associated with server-side code execution. They support native Node.js toolchains, including npm, pnpm, and yarn, and are compatible with major modern frameworks. Additionally, WebContainers facilitate the running of WebAssembly (Wasm) out of the box, allowing for the porting of various languages and frameworks to the browser environment.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Software developers, startups, and product teams that want a fast and scalable way to build and deploy AI agents inside their applications

Audience

Developers searching for a solution to code and preview web projects in the browser

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version
Free Trial

Pricing

$18 per month
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

21st.dev
21st.dev/

Company Information

WebContainers
webcontainers.io

Alternatives

Alternatives

Categories

Categories

Integrations

Bolt.new
Brave Browser
Chromium
Figma
Git
GitHub
Google Chrome
Microsoft Edge
Mozilla Firefox
Node.js
React
Safari
Storybook
Tailwind CSS
WebAssembly
shadcn/ui

Integrations

Bolt.new
Brave Browser
Chromium
Figma
Git
GitHub
Google Chrome
Microsoft Edge
Mozilla Firefox
Node.js
React
Safari
Storybook
Tailwind CSS
WebAssembly
shadcn/ui
Claim 21st and update features and information
Claim 21st and update features and information
Claim WebContainers and update features and information
Claim WebContainers and update features and information