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

Agent 37 is a no-code AI agent platform designed to let users build, deploy, and monetize autonomous AI “skills” or assistants without handling infrastructure or complex engineering. It provides a hosted runtime where creators can upload their expertise, workflows, or tools and turn them into fully functional AI agents that can execute real actions such as API calls, web browsing, code execution, file processing, and automation tasks, rather than just generating text responses. It supports multiple leading AI models, including Claude, GPT, and Gemini, and offers more than 1,000 integrations, enabling agents to connect with external tools and services seamlessly. Agent 37 includes built-in features for hosting, authentication, analytics, and monetization, allowing creators to distribute their agents through shareable links, embed them on websites, and charge users through integrated payment systems.

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

Creators, consultants, and developers searching for a tool to build, deploy, and monetize AI agents that automate workflows and deliver specialized expertise without managing infrastructure

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

$3.99 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

Agent 37
United States
www.agent37.com

Alternatives

Alternatives

Categories

Categories

Integrations

Chromium
Claude
Discord
Gemini
GitHub
Gmail
HubSpot CRM
Jira
Linear
Microsoft Excel
Notion
OpenAI
OpenClaw
React
Slack
Tailwind CSS
Trello
shadcn/ui

Integrations

Chromium
Claude
Discord
Gemini
GitHub
Gmail
HubSpot CRM
Jira
Linear
Microsoft Excel
Notion
OpenAI
OpenClaw
React
Slack
Tailwind CSS
Trello
shadcn/ui
Claim 21st and update features and information
Claim 21st and update features and information
Claim Agent 37 and update features and information
Claim Agent 37 and update features and information