A garden for your mind
Thoughts take root.
Knowledge blooms.
Cortex is a living notebook where your ideas grow organically — connecting, branching, and flowering into understanding. Tend to your thoughts like a garden, and watch your second brain flourish.
The Garden's Gifts
Rooted Connections
Ideas grow deep roots through bidirectional links. Every thought is anchored to its origin and its future.
Organic Discovery
Like wandering a garden path, Cortex reveals unexpected connections between distant ideas.
Lightweight Capture
Jot a seed of thought in seconds. It will find its place in the garden, no pruning required.
Bountiful Harvest
Search and recall with ease. Your entire knowledge garden, always in season.
Daily Rainfall
Spaced reviews nourish your memory. The right ideas resurface when they're needed most.
Wild & Private
Your garden, your ground. Everything stays local. No clouds overhead.
How Your Garden Grows
Sow
Plant every idea — a fragment, a quote, a sketch. No thought is too small for the garden.
Tend
Cortex weaves connections between your notes, like roots beneath the soil finding each other.
Harvest
When you need insight, the garden offers it up. Search, browse, or follow the winding paths.
Plant Your First Seed
Join a community of cultivators growing their second brains, one thought at a time.
Start Your Garden