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Second Brain OS - Toools | Toools

ToolsSecond Brain OS

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Second Brain OS

Your private Second Brain — offline

Productivity

About

Most productivity apps rent you your own thoughts. Second Brain OS is a single HTML file — open it in any browser, on any device, and everything stays on your device forever. No server, no account, no subscription. Just you and your Second Brain.

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At a Glance

PH Votes4

GitHubClosed source

PricingFreemium

PlatformsWeb