Email, calendar and an AI assistant, straight from your machine to your provider.
All 31 pages →Documentation
How to use Nixt Office
Step-by-step guides and full references for every product in the suite — what each control does, every setting and its default, keyboard shortcuts, and what to do when something goes wrong.
Choose a product
Word-compatible documents, written and read on your machine.
All 24 pages →Spreadsheets with a real formula engine, in Excel’s own format.
All 30 pages →Presentations that stay PowerPoint files, with a presenter view.
All 19 pages →Read, fill in, mark up, redact and sign PDFs without sending them anywhere.
All 29 pages →The mail server for your own domain — IMAP, JMAP, SMTP and Sieve in one binary.
All 54 pages →Which app opens which file
| File | Opens in | Also opens inside |
|---|---|---|
| .docx | Nixt Writer | Nixt Mail, as an attachment |
| .xlsx | Nixt Sheets | Nixt Mail, as an attachment |
| .pptx | Nixt Slides | Nixt Mail, as an attachment |
| Nixt PDF | Nixt Mail, as an attachment |
Before you start
The desktop apps work on your own machine and open files without an account. Get them from the Download page.
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