Capture
OrbitCosmo captures every page you read — automatically, and entirely on your machine. No clipping, no saving, no filing.
Research memory that builds itself
OrbitCosmo remembers what you read, so you can find it again.
Obsidian makes you link by hand. OrbitCosmo just captures it as you read.
Free beta · for Google Chrome
Connect
Pages link themselves — by meaning, by the links you clicked, and by shared topics. Your reading becomes a graph without you drawing it.
Recall
Weeks later, type what you half-remember. OrbitCosmo finds the page — even if you can't recall the exact words.
Private by default
- Search and linking run on your machine. The embedding model is bundled with OrbitCosmo — no API key, no cloud, for everything it captures and finds.
- No accounts, no analytics. Nothing to sign up for. Nowhere to log in.
- Nothing leaves unless you turn the wiki on. The optional wiki sends the URLs and excerpts of pages you read to Claude — listed exactly on the privacy page.
- Writes a wiki of your research. Optional, uses Claude (Anthropic): session and concept pages grounded in what you actually read, with citations — yours to export as plain markdown.
Get the beta
Download
Grab the zip and unzip it. It's about 22 MB — the on-device embedding model ships inside, which is what lets search run without a cloud.
Allow
Open chrome://extensions and turn on Developer mode (the toggle in the top-right corner).
Load
Click Load unpacked and choose the unzipped folder. Browse for a bit, then click the OrbitCosmo icon and search for what you half-remember.
While OrbitCosmo is in beta it installs in developer mode rather than from the Chrome Web Store, so Chrome may remind you about developer extensions when it starts. Updates are manual for now: unzip a fresh download over the same folder and press reload on chrome://extensions — your memory stays put, on your machine. Stuck or curious? Write to me.