Desktop · coming soon
Linux
Our programs for the Linux desktop, each with its own page: what it does, real screenshots and where it stands. None of them can be downloaded yet.
Coming soon
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1B Mail
Email for Windows, Linux and Android
Every account in one inbox. Nobody's cloud.
An email program that looks and works like Outlook and talks straight to your own mail servers: real conversations across folders, one unified inbox with Focused and Other, fast local search, and remote images and trackers blocked. It imports your accounts from Thunderbird and classic Outlook. Early access 0.1. An Android version is on the way too.
- WindowsMicrosoft Store
- LinuxRPM · Flatpak
Early access 0.1Coming soonDiscover -

1B Note
Encrypted workspace for Windows and Linux
Pages, databases and teams. Encrypted end to end.
A Notion-style notebook: nested pages built from blocks, databases with table, board, list, calendar, gallery and timeline views, and team spaces with invitations. Sync is end-to-end encrypted, so the server stores your pages without being able to read them. On the desktop it adds keyboard shortcuts, a tray icon and system notifications.
- WindowsMSI
- LinuxRPM
Early access 0.7Coming soonDiscover -

1B Cerula
1B Note for GNOME
Your notes, at home in GNOME.
A native GNOME app built with GTK 4 and libadwaita: notebooks, tags, shortcuts and reminders in an adaptive window that goes from three panes to one on narrow screens. The editor handles checklists, tables, images and code blocks with syntax highlighting; you can search your notes from GNOME Shell and print them or save them as PDF. Written in Rust, on the same encrypted core as 1B Note.
- LinuxRPM
In development · 0.1Discover -

1B Tabella
1B Note for KDE Plasma
Your notes, at home in Plasma.
A native KDE Plasma app built with Kirigami and KDE Frameworks: notebooks, tags, shortcuts and reminders with Plasma notifications, a tray icon and search from KRunner. The editor handles checklists, tables, images and code blocks, and notes print or export to PDF with selectable text. Written in Rust and Qt, on the same encrypted core as 1B Note.
- LinuxRPM
In development · 0.1Discover
Real screenshots of our current builds, filled with sample data.
Android today
While the desktop versions get ready, our apps and games are already in closed testing on Google Play, for phones, tablets and foldables.






