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

E2B is an open source runtime designed to securely execute AI-generated code within isolated cloud sandboxes. It enables developers to integrate code interpretation capabilities into their AI applications and agents, facilitating the execution of dynamic code snippets in a controlled environment. The platform supports multiple programming languages, including Python and JavaScript, and offers SDKs for seamless integration. E2B utilizes Firecracker microVMs to ensure robust security and isolation for code execution. Developers can deploy E2B within their own infrastructure or utilize the provided cloud service. The platform is designed to be LLM-agnostic, allowing compatibility with various large language models such as OpenAI, Llama, Anthropic, and Mistral. E2B's features include rapid sandbox initialization, customizable execution environments, and support for long-running sessions up to 24 hours.

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 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

Audience

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

Audience

AI developers and engineers needing a secure solution to execute AI-generated code within their applications

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

Free
Free Version Supported
Free Trial Not 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

E2B
Founded: 2023
United States
e2b.dev/

Alternatives

Alternatives

Categories

AI SDKs Supported
UI Design Supported

Categories

AI Inference Supported
AI Infrastructure Supported

Integrations

Arcade Not Supported
Assembly Not Supported
Claude Not Supported
Claude Duet Not Supported
Claude for Legal Not Supported
CrewAI Not Supported
Fireworks AI Not Supported
Flue Not Supported
Google Cloud Platform Not Supported
LlamaIndex Not Supported
Meta AI Not Supported
Mistral AI Not Supported
Ollama Not Supported
OpenAI Not Supported
Python Not Supported
React Supported
Tailwind CSS Supported
Vercel Not Supported
Workers by Delos Not Supported
shadcn/ui Supported

Integrations

Arcade Supported
Assembly Supported
Claude Supported
Claude Duet Supported
Claude for Legal Supported
CrewAI Supported
Fireworks AI Supported
Flue Supported
Google Cloud Platform Supported
LlamaIndex Supported
Meta AI Supported
Mistral AI Supported
Ollama Supported
OpenAI Supported
Python Supported
React Not Supported
Tailwind CSS Not Supported
Vercel Supported
Workers by Delos Supported
shadcn/ui Not Supported
Claim 21st and update features and information
Claim 21st and update features and information
Claim E2B and update features and information
Claim E2B and update features and information