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

Seedly CRM is a full-featured customer relationship management platform built for digital agencies, freelancers, and service businesses. Unlike traditional SaaS CRMs that charge monthly per-seat fees, Seedly is a one-time purchase. You get the complete source code, deploy it on your own infrastructure, and never pay another subscription bill. The platform includes everything an agency needs to manage clients and grow revenue: contact and company management, deal pipelines with drag-and-drop Kanban boards, workflow automation, email sequences, task management, appointment scheduling, form builders, and a built-in invoicing system. Every module is production-ready out of the box. Seedly is built on a modern tech stack using Next.js, React, and Convex, giving technical teams a codebase they can actually work with. The architecture is clean, well-documented, and designed to be extended.

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

Agencies

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

No information available.
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

Seedly CRM
Founded: 2026
United States
seedlycrm.com

Alternatives

Alternatives

AgencyPitch

AgencyPitch

GrahAI Systems

Categories

Categories

CRM

Integrations

React
Tailwind CSS
shadcn/ui

Integrations

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