The first multiplayer canvas made of live apps
Mosaic is an infinite board where everyone brings the apps they already work in. Files move between them without ever being sent: straight from one computer to the next, even out of a real folder on your desk. A virtual office made of real, running apps.
Attachments, chat threads, transfer links: every hand-off is another copy, another wait and another "which version is this?". On a Mosaic board, files move along the line between two apps, straight from one computer to the next. You can even put a real folder from your computer on the board, for everyone.
Download or export a file in one node and it's already waiting in every node connected to it, on someone else's computer. They drag it straight into their app. No attachment, no link, no upload.
Put a folder from your computer on the board. Anyone can open it in its own window, see what's inside as it changes, and take what they need. Files only travel when someone opens or saves them, and nobody can write into yours.
Files travel directly between the people on the board. No cloud keeps a copy.
Every file is verified byte for byte when it lands, so what arrives is exactly what was sent.
Designs, PDFs, video, code, spreadsheets. Real files you can open, save or drop anywhere.
Remove a card and it's gone from everyone's board. A shared folder is visible only while you're online.
Paste a link and it opens as a node on the board. It runs on your computer, signed in as you, in Mosaic or in your own Chrome.
Send the invite. People connect straight from their computer to yours, and you let them in.
Everyone sees each other's pages live, talks, points, and passes files from one app to the next.
Mosaic is built for being in the same room: seeing each other, talking, passing things across, and still having a corner that's yours.
See every hand on the board. Click someone's face to follow their view while they present.
Voices come from where people are on the board. Move closer to talk, drift away to focus.
Anyone with the invite knocks; someone at the table lets them in. No accounts, no admin console.
Mark a page private and it never leaves your screen. Others see that it's there, not what's in it.
In the same office? Mosaic finds the others on your local network, and keeps working without an internet connection.
Talk in writing next to the work, mention your AI agent, and find it all again in the board's history.
Mosaic has no servers holding your boards, no database of your files and no account to create. Your work stays on the computers of the people you invited.
A board lives on the computers of the people on it. There's no copy anywhere else, because there's nowhere else.
Computers connect to each other directly, encrypted with the board's own key. Public relays only introduce them; they never see the work.
A page runs on its owner's machine, signed in as them. Others watch it live but never receive its cookies, passwords or session.
Your name, photo and color are kept on your computer. There's nothing to sign up for, and nothing to leak.
An office needs more than windows. Post-its, a timer, a voice memo, a record player: the desk objects on a Mosaic board are made like the real thing, and everyone at the table can use them.
Invite an agent to the board and ask it in the chat. It reads the board, writes post-its, opens pages, arranges and connects nodes, all with your own key.
Up to 3 people per board
$0
Up to 15 people per board
$49one payment
More than 15 people
Let's talk
Privacy and files are never paid features. Private pages, shared folders, voice and chat are in every plan.
Prices in US dollars; tax is added at checkout where it applies. Payment is handled by Polar, our merchant of record. Changed your mind? Full refund within 14 days.
Mosaic is a desktop app for macOS, Windows and Linux. Mosaic Bridge, its Chrome extension, lets pages open in your own Chrome, with your extensions and logins.