Not a server you trust. A room you build.
Most private-chat tools ask you to trust a company's server. Zipper doesn't. When two people connect, the service they talk through is assembled on the spot, in virtual memory, from halves that neither person could build alone.
When either user closes the room, it's gone. It never touched a disk and only existed in memory while in use.
More than a place to talk
Real-time chat
Messages move the moment you send them and exist only while the room is open.
Files & images
Send any file or photo. Images appear inline and tap to enlarge — every transfer is encrypted.
View-once
Set a file so the other person can open it a limited number of times. After that, it's gone.
Self-destruct timer
Give a file a lifespan. When the time runs out it deletes itself from the room.
Copy guard
Mark a file no-copy to discourage casual saving and forwarding by the person you sent it to.
Voice & video calls
Talk one to one, face to face, in the same private room — no separate app, no account.
Sealed invites
Your invite is a sealed bundle. The secret that opens it rides inside the link and never reaches a server.
Run your own node
Host Zipper yourself so rooms assemble in memory you control. One small container, your domain.
Free, no account
Zipper is free to use right now — no signup, no profile, no email. Open a room and start.
How a session works
Honest about what it does — and doesn't
- Every connection runs encrypted over HTTPS and secure WebSockets
- Nothing is written to disk, so there is nothing to recover later
- No logs are kept — the room leaves no record of itself
- Every block is verified in flight, so tampering is caught
- Does not hide that two people connected at the same time
- Does not protect a device that is already compromised
- Does not let strangers find each other — you invite people you know