Cortex
The second brain
Think better. Remember everything.
Cortex is the calm place to capture ideas, connect them, and recall them exactly when they matter.
Free forever. No credit card required.
cortex — second brain
Notes
Reading list
Product ideas
Neuroscience
Quotes
Reading list
Updated today
●Thinking, Fast and Slow — Kahneman
○The Builder's Secret — on compounding
○Notes on a second brain — linked to [[Neuroscience]]
Why Cortex
A complete loop for your thinking
Capture
Jot a note the moment it arrives. Markdown, backlinks, and tags keep it tidy.
Connect
Link related notes and let the graph reveal patterns you would never spot alone.
Recall
Search across everything in milliseconds. Your past self becomes a trusted advisor.
Start in under a minute
Capture your first note, link it to an idea, and watch your second brain grow.