A second brain for everything you learn.
Cairn links what you read and write to what you already know, then brings it back when it matters.
Most of what you read is forgotten within a week. Cairn keeps it connected to what you are working on now.
Capture without filing.
Clip articles, paste highlights, and drop in PDFs. Every source keeps a link back to its page, so you can always check where an idea came from.
Links form as you write.
Mention an idea in one note and every other note about it connects, in both directions. Nothing needs a tag.
Old notes come back on their own.
Each morning Cairn lists the notes related to what you opened yesterday. Read them, ignore them, or start a draft from them.
Who it is for
- Researchers
- Keep sources, quotes, and open questions linked to the drafts they feed.
- Writers
- Gather material for essays and books without losing track of where it came from.
- Students
- Turn lectures and readings into notes you can review before the exam.
- Product teams
- Keep research, decisions, and customer quotes findable for whoever inherits the work.
Start with one note.
Bring the notes you already have. Cairn starts linking them as you go.
Start writing