21st

21st

21st.dev
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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

boat provides powerful cloud virtual machines and persistent sandboxes built for long-running AI agents, allowing users to spawn thousands of cloud computers with browsers and persistent files without managing the entire infrastructure themselves. Each sandbox is a full Ubuntu Linux virtual machine with SSH and SCP access, Docker support, dedicated IPv4 or IPv6 addresses, a 60 fps virtual desktop, and fast disk-level forking from snapshots. Docker, VS Code, Chrome, Ghostty, GitHub CLI, Rust, Node.js, and Bun come pre-installed, enabling users to run any development tool, language, or workflow. Boat supports agents such as Claude Code, Codex, and OpenCode, with tools to prompt, observe, and control agent environments remotely through its CLI, HTTP API, and Python or TypeScript SDKs. Users can execute commands, copy files, monitor agent messages and tool calls, host applications through public HTTPS URLs, and access integrated desktops and browsers.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

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, AI engineers, and teams wanting to deploy, run, manage, and scale AI agents in persistent cloud-based development environments

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version Supported
Free Trial Not Supported

Pricing

$20 per month
Free Version Not Supported
Free Trial Supported

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 Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

21st.dev
21st.dev/

Company Information

boat
Founded: 2026
United States
boat.dev/

Alternatives

Alternatives

Spawn

Spawn

OpenRouter

Categories

AI SDKs Supported
UI Design Supported

Categories

Agentic AI Supported
Virtual Machine Supported

Integrations

Agent 37 Not Supported
Bun Not Supported
Claude Code Not Supported
Cloudflare Not Supported
Daytona Not Supported
Docker Not Supported
Ghostty Not Supported
Google Chrome Not Supported
Modal Not Supported
Node.js Not Supported
OpenAI Codex Not Supported
OpenCode Not Supported
Python Not Supported
React Supported
Rust Not Supported
Tailwind CSS Supported
TypeScript Not Supported
Vercel Not Supported
Visual Studio Code Not Supported
shadcn/ui Supported

Integrations

Agent 37 Supported
Bun Supported
Claude Code Supported
Cloudflare Supported
Daytona Supported
Docker Supported
Ghostty Supported
Google Chrome Supported
Modal Supported
Node.js Supported
OpenAI Codex Supported
OpenCode Supported
Python Supported
React Not Supported
Rust Supported
Tailwind CSS Not Supported
TypeScript Supported
Vercel Supported
Visual Studio Code Supported
shadcn/ui Not Supported
Claim 21st and update features and information
Claim 21st and update features and information
Claim boat and update features and information
Claim boat and update features and information