Personal KnowledgeAppFreemiumLive

Second Brain

Capture anything; ask your notes anything later.

Overview

Second Brain ingests your notes, links, and highlights, then lets you ask questions across everything you've ever saved.

Notes pile up in ten apps and you can never find the one you need.

Everything is embedded and searchable; a chat surface answers from your own knowledge with sources.

ReactSupabasepgvector

GPTClaude

Build atoms proton by proton in your browser and watch each element come to life as you go.

#chemistry#education#simulation

Zoom from quarks to living cells in an interactive browser journey through every scale of matter.

#education#science#simulation

Explore a living cell hands-on with a free, interactive browser-based biology simulation.

#biology#education#interactive