About
Two founders, and a tile broken in two.
Tessr is building encrypted client rooms for firms, on top of a working prototype. Here is who builds it, what the name means, and where things stand today.
Who builds Tessr
Tessr is built by its two founders, Aurimas and JJ. A message you send from the Inquire page goes to them, sealed in your browser on the way.
Why the name
In ancient Rome, a host and a guest would break a small tile in two and keep a half each. Years later, whoever held the matching half was trusted. No name needed. That tile was a tessera.
We dropped two letters. The promise stayed: what lets you in is a key you hold, not a name we keep. Your key is your half, and what you share stays yours.
What Tessr does
With Tessr, a firm will open a sealed room for each client. Files are sealed on the sender's device before they leave, and only the devices of the people in the room hold the key, so Tessr stores boxes it cannot open. A file can also be shown for a set time, view only, with the viewer's name on every page. Rooms, timed views and device signing run in the rooms engine, a research prototype you can run yourself on the Proof page; the apps around it, qualified signing and a 20 year archive come later.
It is for firms that share confidential files every day: law firms, accounting and tax firms, and people who handle company deals. We start in Lithuania.
Follow one file through Tessr, or see what is built and what comes next.
Where things stand
- Tessr is a working prototype: the encryption core, the desktop app and team sharing are built. The rooms engine runs in Proof as a research prototype, not reviewed outside Tessr; the apps, server and browser viewer around it come next. It is not open for clients yet.
- Hosting in the EU is planned, not running yet.
- An independent security audit comes before any real client data.
- The drop box and Proof run in your browser, on a file of yours or on sample data, and send nothing.