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

​Kottster is an open source, self-hosted Node.js admin panel that enables developers to create instant, customizable interfaces for managing database records. It supports databases, allowing users to connect their database and generate admin pages within minutes. It offers features like data viewing with pagination, sorting, filtering, and search capabilities; data management with options to add, edit, and delete records; and automatic detection of table relationships, including one-to-one, one-to-many, and many-to-many associations. Built on a modern tech stack comprising Node.js, React, Remix, Vite, Tailwind, and TypeScript, Kottster provides a smooth development experience. Developers can extend and customize the generated JavaScript and TypeScript code to fit specific project needs. It includes built-in authentication and user management, enabling role assignment, and access control for team collaboration.

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

Developers and development teams requiring a solution to build and manage admin panels for various database-driven 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 Not 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

Kottster
Georgia
kottster.app/

Alternatives

Alternatives

Categories

AI SDKs Supported
UI Design Supported

Categories

Dashboard Supported

Integrations

React Supported
Firebase Not Supported
Grok Bot Supported
JavaScript Not Supported
MariaDB Not Supported
MongoDB Not Supported
MySQL Not Supported
Node.js Not Supported
PostgreSQL Not Supported
Remix Not Supported
SQL Server Not Supported
SQLite Not Supported
Tailwind Not Supported
Tailwind CSS Supported
TypeScript Not Supported
shadcn/ui Supported

Integrations

React Supported
Firebase Supported
Grok Bot Not Supported
JavaScript Supported
MariaDB Supported
MongoDB Supported
MySQL Supported
Node.js Supported
PostgreSQL Supported
Remix Supported
SQL Server Supported
SQLite Supported
Tailwind Supported
Tailwind CSS Not Supported
TypeScript Supported
shadcn/ui Not Supported
Claim 21st and update features and information
Claim 21st and update features and information
Claim Kottster and update features and information
Claim Kottster and update features and information