software catalog

2026-10-28 15:08:48 -06:00
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+---
+title: "Signal"
+category: "Messaging and meetings"
+tagline: "End-to-end encrypted messages and calls, linked to the Signal app on your phone."
+source: "Flathub"
+package: "org.signal.Signal"
+replaces: ["WhatsApp", "iMessage"]
+website: "https://signal.org/"
+code: "https://github.com/signalapp/Signal-Desktop"
+---
+
+## What it is
+
+Signal is a messaging app run by the nonprofit Signal Foundation. Every message, call and attachment is end-to-end encrypted with the Signal Protocol, and the service keeps as little data about you as it can. Signal Desktop is the computer version: it links to the Signal app on your phone and shows the same chats.
+
+## Why it's here
+
+- **Private by design.** Encryption is always on, for everyone, with nothing to configure.
+- **Type on a real keyboard.** Chats, group calls and file sharing from your phone work on the desktop too.
+
+## On CoreDesktop
+
+CoreDesktop installs Signal as a Flatpak from Flathub. Open it from the app grid and scan the QR code it shows with Signal on your phone (**Settings › Linked devices**). The sandboxed AI agents can't read Signal's data. `update` keeps it current along with your other Flatpaks.