21st

21st

21st.dev
+
+

Related Products

  • Gemini Enterprise Agent Platform
    961 Ratings
    Visit Website
  • Apify
    1,242 Ratings
    Visit Website
  • Retool
    570 Ratings
    Visit Website
  • Google Cloud Run
    341 Ratings
    Visit Website
  • JetBrains Junie
    12 Ratings
    Visit Website
  • Checksum.ai
    1 Rating
    Visit Website
  • Pipefy
    591 Ratings
    Visit Website
  • Viktor
    17 Ratings
    Visit Website
  • Creatio
    522 Ratings
    Visit Website
  • Windsurf Editor
    168 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

NullClaw is an ultra-lightweight autonomous AI assistant infrastructure built in Zig and distributed as a single static binary designed to run efficiently on virtually any hardware. It emphasizes extreme performance and minimal resource usage, shipping as a roughly 678 KB executable that typically consumes about 1 MB of RAM and boots in under two milliseconds. It eliminates traditional runtime overhead by avoiding virtual machines, interpreters, and complex dependency chains, allowing developers to deploy agents simply by running the compiled binary. Despite its small footprint, the framework provides a full autonomous agent stack with support for more than 22 model providers, 18 communication channels, hybrid vector and FTS5 memory, streaming, voice, and multi-layer sandboxing. Security is built in through workspace scoping, explicit command allowlists, encrypted secrets, and strict sandbox isolation using tools such as Landlock, Firejail, or Docker.

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 and AI engineers requiring a solution to deploy autonomous agents on low-resource or edge hardware

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

Free
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

NullClaw
United States
github.com/nullclaw/nullclaw

Alternatives

Alternatives

IronClaw

IronClaw

Near AI

Categories

Categories

Integrations

Docker
Firejail
Model Context Protocol (MCP)
OpenAI
React
Tailwind CSS
Zig
shadcn/ui

Integrations

Docker
Firejail
Model Context Protocol (MCP)
OpenAI
React
Tailwind CSS
Zig
shadcn/ui
Claim 21st and update features and information
Claim 21st and update features and information
Claim NullClaw and update features and information
Claim NullClaw and update features and information