Most AI tools charge a subscription to mark up your API calls, scatter your workflow across 5 tabs, and hold your data on their servers. Syntex AI OS fixes all three — at once. It's a full desktop environment that runs in a browser tab. Bring your OpenRouter key and unlock 300+ models — Claude, ChatGPT, Gemini, Llama, paying providers directly at cost. Your key is stored in your browser only. We never see it. Pro tier is free for everyone until 100,000 users. No credit card. No trial.

Anima - OnBrand Vibe Coding — Design-aware AI for modern product teams.

Design-aware AI for modern product teams.

Hey Product Hunt 👋 I want to tell you what actually made me build this. I was debugging a project at 2am. I had a terminal in one tab, an AI chat in another, my IDE in a third, A browser in a fourth. I was copy-pasting errors into ChatGPT, paying $20/mo for it, knowing it was marking up every token I sent. I thought: this is insane. A computer inside a computer and it's still more fragmented than a 1990s desktop. So I built Syntex AI OS. A real desktop that lives in a tab. The thing I care most about is the BYOK model. You bring your own OpenRouter key. It stays in your browser — encrypted, local, never transmitted. You pay Anthropic or OpenAI or Google directly. We take nothing. No margin. No lock-in. Ever. That's not a feature. It's a philosophy. Pro is free for everyone until we hit 100,000 users together. Not a limited beta. Not a timer. A milestone we hit as a community — because I want you to have the full product before we ever ask you for money. One genuine ask: tell me what would make this your default workspace. The brutal feedback is the stuff I actually build from. → https://syntex-aios.pages.dev

Simply include in your message 'Use the Desktop for this' simplest way of making it use the Desktop sandbox!

Simply in Chat Mode, when the AI shows 'Execute' button in the chat message, click on it and it will complete the Task!

Simply include in your message 'Use the Desktop for this' simplest way of making it use the Desktop sandbox!

Simply in Chat Mode, when the AI shows 'Execute' button in the chat message, click on it and it will complete the Task!

Anima - OnBrand Vibe Coding — Design-aware AI for modern product teams.

Design-aware AI for modern product teams.

Syntex AI OS

A full desktop OS in your browser — bring your own AI

A full desktop OS in your browser — bring your own AI

Forum Threads

How to make the AI use the Desktop?

How do I make the AI complete a Desktop Task?

Forum Threads

How to make the AI use the Desktop?

How do I make the AI complete a Desktop Task?