A clipboard that keeps your secrets.
The world's quietest clipboard manager.
Arca remembers everything you copy, helps you find it again in seconds, and quietly hides your passwords and keys before they slip somewhere they shouldn't. It all happens on your Mac — nothing is ever sent to the cloud.
Recognizes passwords and keys from
Arca lives in the half-second between copy and paste — the busiest, least-guarded moment in your day. It tidies what passes through, remembers everything by meaning, and quietly locks your keys and passwords away before they can ever leave your Mac. Local-first, keyboard-driven, and quiet by design.
How it works
Three quiet steps, no setup.
Copy like you always do
The moment you copy a password, an API key, or a token, Arca recognizes it on its own. Nothing to configure, no rules to write.
Paste a safe stand-in
One shortcut swaps the secret for a harmless placeholder and locks the real thing away, encrypted, on your Mac. Now it's safe to paste anywhere.
Get the real one back
Paste into a chat or a doc, then copy the reply back — Arca puts your real secret in exactly where the placeholder was. You never skip a beat.
See it work
You paste into ChatGPT. Your key stays home.
Pasting code or config into an AI chat is the easiest way to leak a live credential. Arca catches it in the half-second before it happens.
Arca hides it
Your key is swapped for this placeholder and encrypted on your Mac. Paste it into any chat — and get the real one back the moment you need it.
More than a clipboard
Small things that add up all day.
Find it by meaning
Search “that Zoom link” or “the database password” and Arca finds it — even when you don't remember the exact words. It understands what you meant, right on your Mac.
Tidy as you paste
Messy JSON, a wall of SQL, HTML full of tags? Clean it up in one keystroke, right as you copy — so what you paste is always neat.
Always instant
A quick keystroke brings Arca up right where your cursor is, and it never steals focus from what you're doing. It feels weightless because it is.
Knows what to ignore
Anything you copy from 1Password and other password managers is never saved. Arca keeps what's meant to be kept, and quietly forgets the rest.
How Arca compares
More than clipboard history.
The great clipboard managers remember what you copy. Arca does that too — then keeps it private and puts it to work.
| Feature | Arca | Maccy | Paste | Raycast |
|---|---|---|---|---|
| Remembers everything you copy | check | check | check | check |
| Instant, keyboard-first | check | check | check | check |
| Find it by meaning, not exact words | check | remove | remove | remove |
| Hides your keys before you paste them | check | remove | remove | remove |
| Tidies up messy text as you paste | check | remove | remove | remove |
| Everything stays on your Mac — no cloud | check | check | remove | remove |
Reflects each app's default behavior. Maccy, Paste, and Raycast are excellent tools — Arca just does a little more.
Private by design.
Not a promise in a policy — it's how Arca is built. There's no cloud, no account, and no sign-in. Your clipboard never leaves your Mac.
Try Arca.
It's in a small private alpha for people who live in their clipboard. Ask for an invite — it takes one line.
macOS first · no account · no credit card