Your office work, on your computer, provably intact.
Documents, presentations, workbooks, publications, proposals and PDFs in one suite that runs on your own machine. Seal anything you make and anyone can check later that not one byte has changed.

Ten engines, each with its own home and templates.
Every engine opens to its own templates and your files for it, so nothing piles into one crowded screen. Turn a workbook into a document, a PDF into a spreadsheet, or a document into slides whenever the data needs a new shape.
Create
Work with files
Build
Protect
Made for real work, not demos.
Pick an engine to see it.

Seal it once. Check it any time.
Every document shows a live fingerprint of its exact contents. Sealing writes a packet you can keep, send or archive, and verifying it rebuilds the PDF from the document and compares every byte.
Make
Write, design or price in any engine. The layout is computed the same way on every computer, so pages break in the same places everywhere.
Seal
One click stores the document, its exact page layout, the PDF and the fonts used, each with a SHA-256 fingerprint.
Verify
Re-check the fingerprints and re-create the PDF from scratch. If anything changed, you will know exactly which file.
Download
Everything runs on your computer. Your files stay in your own data folder and nothing is sent anywhere.
Windows
Windows 10 or 11, 64-bit. The installer adds a Start menu entry; the portable version runs from any folder.
Each release lists SHA-256 checksums so you can confirm the download is the one we published.
The online workspace is on its way.
The same engines in your browser, for members of The Constellation Network. Sign in from any computer and pick up where you left off.
- Docs, Slides, Sheets, Publisher and Proposals
- PDF tools, conversion and the encrypted vault
- Sealing and verification, exactly as on the desktop
- Code and Terminal stay in the desktop app, because they work with your own computer