21st

21st

21st.dev
21st OpenComputer

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21st:

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.
OpenComputer:

About

OpenComputer is a managed cloud runtime for building and deploying TypeScript AI agents. Developers define agent behavior, select models and tools, and deploy agents with durable sessions, streaming, schedules, memory and versioned environments. APIs and service connections let teams use agents in applications and workflows such as coding assistance and background automation.
21st:

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
OpenComputer:

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
21st:

Audience

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

Audience

Developers and teams building, integrating, and operating TypeScript-based AI agents, including background agents, coding workflows, and other automated tasks.
21st:

Support

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

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Not Supported
21st:

API

Offers API Not Supported
OpenComputer:

API

Offers API Supported
21st:

Screenshots and Videos

OpenComputer:

Screenshots and Videos

No images available
21st:

Pricing

Free
Free Version Supported
Free Trial Not Supported
OpenComputer:

Pricing

PAYG: machine time starts at $0.00315/min, billed per second; model calls are passed through at API rates. $10 credit to start; no monthly commitment. Pro is $20/month and Max $200/month, each prepaid as 10× usage credit. Enterprise pricing is custom.
Free Version Not Supported
Free Trial Not Supported
21st:

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
OpenComputer:

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
21st:

Training

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

Training

Documentation Not Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
21st:

Company Information

21st.dev
21st.dev/
OpenComputer:

Company Information

OpenComputer
opencomputer.dev/
21st:

Alternatives

OpenComputer:

Alternatives

Flowise

Flowise

Flowise AI
5.0 out of 5 stars
21st:
OpenComputer:
21st:
OpenComputer:
21st:
OpenComputer:
21st:
OpenComputer:
StateFabric

StateFabric

J Gregory Technology Ltd.
21st:

Categories

AI SDKs Supported
UI Design Supported
OpenComputer:

Categories

AI Agents Supported
21st:

Integrations

GitHub Not Supported
Gmail Not Supported
Google Calendar Not Supported
Google Workspace Not Supported
Grok Bot Supported
Linear Not Supported
Model Context Protocol (MCP) Not Supported
React Supported
Slack Not Supported
Tailwind CSS Supported
shadcn/ui Supported
OpenComputer:

Integrations

GitHub Supported
Gmail Supported
Google Calendar Supported
Google Workspace Supported
Grok Bot Not Supported
Linear Supported
Model Context Protocol (MCP) Supported
React Not Supported
Slack Supported
Tailwind CSS Not Supported
shadcn/ui Not Supported
21st:
Claim 21st and update features and information
Claim 21st and update features and information
OpenComputer:
Claim OpenComputer and update features and information
Claim OpenComputer and update features and information