Your notes were never meant to be isolated

Synapse turns scattered notes into a connected knowledge graph. Write freely. Link naturally. Let your second brain surface the insights you would have missed.

Capture anything

Notes, bookmarks, PDFs, images, voice memos — everything goes in.

Link organically

Bi-directional links form automatically as you write. No manual tagging needed.

Retrieve instantly

Semantic search understands meaning, not just keywords. Find what you meant.

Trusted by deep thinkers

Researchers, writers, and builders who think in systems.

"Finally, a tool that matches how my brain actually works."

Dr. Maya Chen

Neuroscience Researcher

"I stopped losing ideas. That alone is worth everything."

James Holloway

Author & Essayist

"The graph view changed how I think about my own thinking."

Priya Sharma

Product Lead, AI Startup