allsites.space - multi-site workspace

Open any website side by side in one tab — split, resize, save, sync free.

by Greg Heller

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Apr 7, 2026 Productivity

browser_extension multitasking workspace

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About

allsites.space is a browser-based workspace that lets you open multiple websites side by side in a single tab.What it does:- Split panes horizontally and vertically — nest infinitely- Resize by dragging- Auto-saves your layout — come back tomorrow, everything's there- Cloud sync across devices (sign in with Google/GitHub)- Share your workspace via a single URL- YouTube, Spotify, Figma auto-convert to embeddable format- 150+ site autocomplete, command palette (Ctrl+K), keyboard shortcuts- Works with any site via companion Chrome extension (free)- 20+ workspace templates (dev, AI, travel, shopping, study)Tech: React, TypeScript, Vite, Zustand, Supabase, Cloudflare PagesWhat's included:- Full source code (GitHub repo)- Live site on Cloudflare Pages (allsites.space)- Published Chrome extension on Chrome Web Store- Supabase backend (auth + cloud sync)- Google & GitHub OAuth configured- SEO setup (structured data, sitemap, blog articles)- Cloudflare Web Analytics- Privacy policy- All assets and branding