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

DNotifier has built the infrastructure layer for AI-native applications. As AI becomes a core part of modern software, developers face increasing complexity. Building production-ready AI systems often requires combining multiple services for agent orchestration, event streaming, knowledge retrieval, search, prompt testing, AI workflows, notifications, real-time communication, and scalable backend infrastructure. DNotifier brings these capabilities together into a unified platform designed specifically for AI-native software. Our platform enables developers to build autonomous AI agents, multi-agent systems, real-time applications, and intelligent workflows without stitching together dozens of disconnected tools. With a developer-first approach, DNotifier provides the infrastructure needed to power scalable, reliable, and event-driven AI applications from a single SDK and API. Our mission is to simplify the way SME's build intelligent software.

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

All SME's

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

No images available

Pricing

Free
Free Version
Free Trial

Pricing

$49/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

DNotifier
United Arab Emirates
www.dnotifier.com

Alternatives

Alternatives

Categories

Categories

Integrations

React
Tailwind CSS
shadcn/ui

Integrations

React
Tailwind CSS
shadcn/ui
Claim 21st and update features and information
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