KitesurfCloudflare
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Related Products
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About
Kitesurf is an agent-first browser built specifically for AI agents and runs entirely on Cloudflare Workers instead of using Chromium. It is designed around what agents actually need: structured machine-readable content, scalable execution, low CPU and memory use, and safe interaction with untrusted web pages, rather than human-facing features such as tabs, themes, extensions, or pixel-perfect scrolling. Each page load is treated as untrusted input, every session starts fresh, and components are isolated with access only to the resources required for their function. Kitesurf uses native Rust compiled to WebAssembly where possible and is organized around an Engine, PageScript, and PageRenderer. The Engine exposes Chrome DevTools Protocol WebSocket and REST APIs and stores session state, while PageScript parses HTML and CSS and runs JavaScript and WebAssembly inside isolated Workers.
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About
Phi Browser is an AI-native web browser designed to act as an intelligent, proactive companion that learns user behavior and assists with tasks directly within the browsing experience. Built on the Chromium engine, it functions as a full, fast, and stable browser while maintaining an open-source core for transparency and reliability. It introduces a personalized AI system based on a unified memory layer that remembers user activity, habits, and context, allowing it to anticipate needs and prepare actions without requiring repeated prompts. Rather than relying on a generic assistant, Phi offers a customizable, user-specific AI that adapts over time and proactively suggests or executes tasks such as navigating pages, summarizing content, or managing workflows. It emphasizes “less prompting, more doing,” meaning the browser can automate repetitive actions like clicking, typing, and navigating while maintaining accountability by showing what it has done.
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Audience
AI agent developers that need a scalable browser runtime optimized for programmatic web navigation, structured content extraction, and automated browsing
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Audience
Developers, power users, and productivity-focused individuals who want a browser that automates tasks and adapts to their habits using AI
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Support
Phone Support
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
$20
Free Version
Free Trial
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Pricing
Free
Free Version
Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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Company InformationCloudflare
Founded: 2009
United States
blog.cloudflare.com/kitesurf/
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Company InformationPhi Browser
Founded: 2025
United States
phibrowser.com
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Alternatives |
Alternatives |
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Categories |
Categories |
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Integrations
Chromium
CSS
Chrome DevTools
Cloudflare
HTML
JavaScript
WebAssembly
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Integrations
Chromium
CSS
Chrome DevTools
Cloudflare
HTML
JavaScript
WebAssembly
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