Outpost

Download Outpost

Or just open it in a browser

app.outpost-chat.com runs the same client with nothing to install. Type the address of the server you want and it connects straight to it.

One caveat worth knowing. Encrypted direct messages are encrypted by the client, so whoever serves the client is trusted not to tamper with it. That is us, for this one. If encryption is why you are here, use the desktop app or the client your own server serves. Your keys also cannot follow you between addresses, so signing in here needs your recovery code even if you already use Outpost elsewhere.

On Linux, use the Flatpak

It updates itself, it is sandboxed, and it shows up in Bazaar, GNOME Software and KDE Discover once the repo is added. Two commands.

flatpak.outpost-chat.com has them, along with why this is our own repo and not Flathub.

The native desktop app for Windows, macOS, and Linux, plus an early Android app. You'll still need an Outpost server to connect to. Either join one from the directory or run your own.

iPhone is in review with Apple. It is not installable yet. That is the review queue, not a release date. This page gets the link the day it clears.

The Windows installer is unsigned, so SmartScreen warns on first run. That is a real gap, not a broken build. Windows needs its own paid code-signing certificate and there isn't one yet. Mac signing is now set up and takes effect from the next release, so builds you already downloaded are still unsigned and still need the Gatekeeper workaround below. See the support page if you'd like to help close the Windows gap.
Loading latest release…

macOS: "Outpost is damaged and can't be opened"

This is macOS Gatekeeper reacting to an unsigned, unnotarised app, not a corrupted download. Open a terminal and run:

xattr -cr /Applications/Outpost.app

That clears the quarantine attribute Gatekeeper checks, and the app opens normally after that.

Windows: "Windows protected your PC"

This is SmartScreen reacting to an installer with no code-signing certificate behind it. Again, not a broken build. Click More info, then Run anyway.

Android: install blocked / "unknown sources"

This is a debug build, not something distributed through the Play Store, so Android will ask you to confirm installing it (from Chrome, Files, or whichever app you downloaded it with) the first time. It's early, so expect rough edges. Voice channels, text, and the rest of the app work.

Auto-updates

Windows and Linux builds auto-update in place via GitHub Releases. macOS and Android builds currently can't auto-update yet. The Android build has no update check, and Mac auto-update needs a signed build, which starts from the next release. Re-download from this page to update those for now.