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Average Ratings 0 Ratings

Total
ease
features
design
support

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Write a Review

Description

21st is a development platform designed to help engineers quickly build and deploy AI agents inside their applications. The platform provides a specialized SDK that simplifies the process of defining agent behavior, integrating tools, and connecting AI models. Developers can create agents using familiar technologies such as Next.js, React, TypeScript, Python, and Node.js, making integration straightforward for modern applications. Once an agent is defined, the platform allows it to be deployed with a single command while automatically handling infrastructure requirements. 21st provides sandboxed execution environments through E2B sessions, ensuring that agent operations run securely and independently. The platform includes a ready-to-use chat interface component that can be embedded directly into an app for user interaction. Additional features include token streaming, conversation history, tool execution, and built-in observability for debugging and monitoring. Developers can replay sessions and trace tool calls to better understand how agents behave during execution. The system also supports spend limits, authentication controls, and rate limiting to manage AI usage across users. By combining development tools with managed infrastructure, 21st helps teams launch scalable AI agents without building complex backend systems.

Description

Gummble serves as a comprehensive UI design reference library, boasting over 300,000 authentic app screenshots, more than 21,000 user flows, and a variety of design patterns sourced from over 1,500 launched iOS, Android, and web applications. It is a valuable resource for designers, UX researchers, developers, and product teams, allowing them to search by specific patterns like onboarding processes, paywalls, empty states, and settings, as well as by UI text or complete user flows. Each screen comes with an in-depth design analysis, enabling users to compile references into organized collections. Additionally, its MCP server facilitates interactions with compatible AI assistants and coding tools such as Claude, Cursor, and Codex, enabling them to utilize the library for grounding interface design and implementation in real-world examples. While the free plan provides limited browsing capabilities, the Browse plan unlocks unlimited access to screens, flows, downloads, collections, and MCP features, with the Pro plan further offering Figma export options to enhance workflow efficiency. This multifaceted approach makes Gummble an indispensable tool for anyone involved in UI design.

API Access

Has API No 

API Access

Has API Yes 

Screenshots View All

Screenshots View All

No images available

Integrations

Claude No 
Codex CLI No 
Cursor No 
Figma No 
Model Context Protocol (MCP) No 
React Yes 
Tailwind CSS Yes 
shadcn/ui Yes 

Integrations

Claude Yes 
Codex CLI Yes 
Cursor Yes 
Figma Yes 
Model Context Protocol (MCP) Yes 
React No 
Tailwind CSS No 
shadcn/ui No 

Pricing Details

Free
Free Trial No 
Free Version Yes 

Pricing Details

$9.99/month
A Free plan provides limited browsing. Browse is $9.99/month and includes unlimited screens, flows, downloads, collections, and MCP access. Pro is $14.99/month and adds Figma export.
Free Trial No 
Free Version Yes 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App Yes 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

21st.dev

Website

21st.dev/

Vendor Details

Company Name

Gummble

Founded

2026

Country

Vietnam

Website

gummble.com

Product Features

Product Features

Alternatives

Alternatives

No Alternatives