21st21st.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.
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About
HeroUI is an AI-powered platform that enables users to generate production-ready React applications by simply providing prompts or screenshots. Built upon the open source HeroUI library, which boasts over 23,000 GitHub stars and 600,000 downloads, HeroUI combines design and code into a unified interface. Users can describe their desired UI, such as "responsive pricing page with three plans," and the platform will generate clean React code utilizing Tailwind CSS and HeroUI components. Features include manual code editing in developer mode, instant customization by selecting components and opening them in chat, and the creation of mobile-first layouts with clean semantics. HeroUI aims to streamline frontend development, allowing designers, developers, and founders to transition from concept to functional frontend code rapidly.
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Audience
Software developers, startups, and product teams that want a fast and scalable way to build and deploy AI agents inside their applications
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Audience
Designers and developers seeking a solution to expedite the creation of responsive React applications through AI-driven UI generation
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Support
Phone Support
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
Free
Free Version
Free Trial
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Pricing
Free
Free Version
Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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Company Information21st.dev
21st.dev/
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Company InformationHeroUI
United States
heroui.chat/
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