localhost:
Download

Linux

The Secret Service and the tray icon on GNOME.

localhost on Linux comes as a .deb, an .rpm and an AppImage, for x86_64. See Install.

A Secret Service

Secret values are kept by your desktop’s Secret Service: GNOME Keyring on GNOME, KWallet on KDE Plasma, or another provider such as KeePassXC with Secret Service enabled. Most desktops run one already. Without one, Services that use a Secret fail to start with “The secret store refused: …”, and saving a Secret fails the same way; everything else works.

The tray icon on GNOME

The tray icon uses AppIndicator. KDE Plasma, Cinnamon, Xfce and Ubuntu’s GNOME show it as is. Stock GNOME, as on Fedora, needs the AppIndicator and KStatusNotifierItem Support extension (gnome-shell-extension-appindicator on Fedora).

Without a tray nothing is lost: closing the window still leaves your Services running, and launching localhost again brings the window back. Quit with Ctrl+Q.

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Install localhost for macOS

Two quick steps, usually under a minute.

  1. Drag it to Applications

    Open localhost-<version>.dmg and drag localhost to Applications.

    Download localhost-<version>.dmg

  2. Open it the first time

    localhost isn’t notarized by Apple yet, so macOS blocks the first launch once:

    1. Click Done in the warning.
    2. Open System Settings › Privacy & Security and scroll to Security.
    3. Click Open Anyway, and confirm with your password or Touch ID.

    Or run this in Terminal, then open localhost:

    xattr -dr com.apple.quarantine /Applications/localhost.app

macOS 15 or later · Apple silicon or Intel

  1. Run the installer

    Open localhost_<version>_x64-setup.exe. It installs for your user only, no administrator rights needed.

    Download localhost_<version>_x64-setup.exe

  2. Get past SmartScreen

    The installer isn’t signed by a known publisher yet, so Windows says “Windows protected your PC”:

    1. Click More info.
    2. Check that the file is localhost_<version>_x64-setup.exe.
    3. Click Run anyway.

Windows 10 or 11 · x64 · WSL 2 for Projects in WSL

  1. Download your package

    Ubuntu, Debian.debFedora.rpmAny distroAppImage

  2. Install it

    From the folder you downloaded it to:

    sudo apt install ./localhost-app_<version>_amd64.deb
    sudo dnf install ./localhost-app-<version>-1.x86_64.rpm
    chmod +x localhost-app_<version>_amd64.AppImage && ./localhost-app_<version>_amd64.AppImage

    Secrets need a Secret Service (GNOME Keyring, KWallet). On stock GNOME the tray icon needs the AppIndicator extension.

x86_64 · Ubuntu 22.04+ · Debian 12+ · Fedora

On another system?Install guide →