Tessera

Closed alpha

Ask for an installer.

Tessera is not publicly downloadable yet. Invites go out in small batches so that the problems people hit can actually be answered, rather than accumulating in an inbox. Tell us where to send it.

Genuinely read, and it decides who gets an invite first — the alpha is more useful with people whose work the app is likely to break.

Current build 0.0.6, Windows 10/11 64-bit. You can ask to be removed at any time.

What you are asking for

The build, honestly described.

Version
0.0.6
Released
4 August 2026
Size
3.0 MB
Platform
Windows 10 / 11, x64
Install
Per-user, no administrator prompt

SHA-256 of the current build

Published here so that you can check what arrives by email against what this page says. A private link is only as trustworthy as the checksum you can compare it to, and this page reaches you over TLS from a different origin than the file will.

e9792f69037aa0c4a6c95d9931b6b1e8343ef8b71b523bb1010163d2c784913b 
Get-FileHash -Algorithm SHA256 .\Tessera-0.0.6-setup.exe

It is an alpha, and the word is meant literally.

The feature surface is finished — documents, boards, databases, history, sharing — but the shell around it is not. There is no automatic update, no crash reporting, and no whole-workspace backup. Your pages are ordinary files, so copying the folder is the backup, and doing that is worth the habit.

The installer is not code-signed.

Windows SmartScreen will warn. That is about the absence of a certificate rather than anything found in the file — verifying the SHA-256 is the check that means something.

Windows only. No macOS or Linux build has been made; the credential store is written against the Windows data-protection API and those platforms need a keychain backend first.

What happens to your address

One list, one purpose.

It goes into a file on our server and is used to send you an installer and occasional notices about the alpha. It is not shared, not sold, not passed to an email marketing service, and not used to build a profile of you. Ask and it is deleted — and it is deleted anyway once the alpha ends and everyone has been let in.

The privacy policy says the same thing in the language the law wants it said in.