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Average Ratings 0 Ratings

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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

Subspace serves as an innovative workspace for AI-native agents, specifically crafted to aid developers and teams in the oversight, coordination, and collaboration with various coding agents within a cohesive environment that maintains context throughout different sessions. Rather than considering each interaction with AI as a separate event, this platform actively cultivates a persistent memory system that compresses every dialogue into structured insights, encompassing decisions, obstacles, and advancements, which are consistently refined to reflect an evolving state of the project. This collective memory is associated with the overall workspace instead of any specific tool, enabling diverse agents, such as Claude Code, Codex, and others, to seamlessly continue from where prior sessions concluded without the need for repetitive explanations or manual context shifts. With Subspace, users can integrate terminals, files, documentation, browser views, and git workflows into well-organized workspaces, allowing for the simultaneous operation of multiple agents while facilitating rapid transitions between different projects. Consequently, this comprehensive approach enhances productivity and collaboration, paving the way for more efficient development processes.

API Access

Has API

API Access

Has API

Screenshots View All

Screenshots View All

Integrations

Amp
Ansible
ChatGPT
Claude Code
Codex CLI
Cursor
Devin
Gemini
GitHub Copilot
Grok
Kiro
OpenClaw
OpenCode
Perplexity
React
Tailwind CSS
shadcn/ui

Integrations

Amp
Ansible
ChatGPT
Claude Code
Codex CLI
Cursor
Devin
Gemini
GitHub Copilot
Grok
Kiro
OpenClaw
OpenCode
Perplexity
React
Tailwind CSS
shadcn/ui

Pricing Details

Free
Free Trial
Free Version

Pricing Details

$12 per month
Free Trial
Free Version

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Vendor Details

Company Name

21st.dev

Website

21st.dev/

Vendor Details

Company Name

Subspace

Country

United States

Website

www.subspace.build/

Product Features

Product Features

Alternatives

Alternatives

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