One shared memory for every AI.
Every AI you use is building its own private memory of you, and none of them will ever share it with the others. Callosium is the one folder they all read. Teach Claude something today, and ChatGPT knows it tomorrow. English and Arabic, fully offline, free forever.
You have a memory problem. Three of them.
The tools got smart. The remembering got worse.
"I know I wrote it down somewhere."
→ It finds it the way you actually ask: typos, half-memories and all.
"My AI forgets everything."
→ With one shared brain, it already knows. You stop repeating and start working.
"I don't trust AI with my private stuff."
→ Runs on your machine. Your files never leave it. Nothing to leak.
Three steps. Then every AI just knows.
Your knowledge goes in a folder.
Plain files you can open, read, and edit yourself. Callosium keeps them organized so you never have to.
Your AIs plug into it.
Claude, ChatGPT, coding assistants. Connecting each one takes about two minutes.
They all remember.
Ask any of them anything you know. They answer from your files, and they tell you where the answer came from.
Watch it find a memory.
One of the best-funded AI memory products was acquired. Apps sunset, regions cut off, accounts deleted. That is what renting your memory means.
Callosium's answer is boring on purpose: a folder on your own computer, plain files any app can read. If we disappeared tomorrow, your brain would still be right there.
Owned should mean owned.
Giving it your whole life should feel safe.
answers on a fresh 15,000-question certification it had never seen (96.4%). English and Arabic, fully offline.
never invents an answer. Across 15,000 test questions, including 1,450 built to trick it, it fabricated zero.
median wait for an answer, 116ms for the slowest request in a hundred, measured across the whole certification.
more often finds the right note than plain keyword search, measured head-to-head.
notes in the builder's own live brain, updated as it grows.
AI clients with step-by-step connect guides.
Every number here comes from a test that ships with the code. Run it on your own notes and check us.
Callosium is free. Forever means forever.
Everything above: the brain, the recall, connecting your AIs, offline, both languages.
Hey, it's Abdo. Let me be honest about why this exists.
I got tired of being a stranger to my own tools. I'd tell one AI everything, open another, and start from nothing. Each one knew a different, half-finished version of me, and I was the one holding it all together.
So one weekend I stopped waiting for someone to fix it. I put everything I know into a folder of plain files on my own machine and pointed all my AIs at it. The first time a fresh chat already knew my work, my people, the way I write, something clicked. I made it for me first.
I'm not a big company, it's just me, building this in the open. If your tools keep forgetting you the moment you need them, I think you'll want this too. Come say hi while I build it.
Plain answers.
Where does my data live?
In a folder on your computer. That's it. The free version never sends your files anywhere.
Which AIs work with it?
Claude (Desktop and Code), ChatGPT, Cursor, and most AI tools that can use connected apps. If your tool can read connected apps, it can read your brain.
I use Obsidian. Does it work with my vault?
Yes. Callosium works on plain files, and your vault already is plain files. Nothing to convert, nothing to import.
Does Arabic really work?
Yes. Same test, same bar as English: thousands of questions in both. If you think in two languages, your brain should too.
Is it open source?
Yes — all of it, Apache-2.0, on GitHub. There is no closed layer and no paid tier. Your notes stay your files whatever happens to the project.
What do I pay?
Nothing, ever. Callosium is free and open source, with no paid tier and nothing held back. Your notes are your files either way.
When can I get it?
Early access is open. Callosium is free forever.
What if Callosium shuts down?
Then you still have a folder of readable files with everything you know in it. That is the whole point.
How do I get help or contact you?
Email support@callosium.com and a real person (usually Abdo) will get back to you. You can also just reply to any email we send you.