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Software · Self-hosting

Butler

Butler is a home automation program, available on Linux.

  • Completely free
  • Linux
  • Open source
  • No account

Overview

Butler is a home automation program, available on Linux.

Services and protocols mentioned: Home Assistant.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information
  • “Companion for Home Assistant” — Flathub, 10 November 2026

At a glance

All of Butler is free: no feature is locked behind a paid plan, and its code is open.

Its licence (GPL-3.0+) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

  • Open source code
  • No account needed
  • Commercial use allowed

About

Access your Home Assistant dashboard from a native companion UI, integrating better with your OS. Native features include: Icon in your App Grid, Applications Menu, Dash, Dock, etc. Native header bar Save and restore current view and size when closed and re-opened Two-finger swipe and mouse button support to go back/forward between views Cross-desktop light/dark style support (if supported by your Lovelace theme) Butler is designed to make getting at your Home Assistant dashboard easier for kiosks, your laptop/desktop, or your Linux phone. It does not currently support companion app features from Android and iOS like location services, notifications, or exposing device sensors—if you’d like to add those features, please check out the website to contribute! Other features include: Pinch-to-zoom Set the scaling with Ctrl+Plus/Minus or Ctrl+0 to reset Fullscreen from the menu, a keyboard shortcut, or a GSetting to better support kiosk use cases Note WebRTC camera streams (i.e. used by some newer Nest cameras) are not currently supported.

Description from Flathub — AppStream (Flathub)

Sources and checks

  • Facts collected from GitHub (credit card, account, source code, publisher, licence, free status, platforms, commercial use) —
  • Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) —
  • Last technical check: 6 November 2026
  • Description from Flathub — AppStream (Flathub)

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