Available Runtimes

This page provides information about available Flatpak runtimes. It is primarily intended as information for application developers and distributors.

There are currently three main runtimes available: Freedesktop, GNOME and KDE. These are all hosted on Flathub.

What is mentioned here is just a high level look at the contents. To have up to date information simply install the runtime and open a shell inside of it (flatpak run org.freedesktop.Sdk//21.08) from there you can look around or use tools like pkg-config --list-all. In the runtime shell you can also inspect /usr/manifest.json, which lists the sources used to build it.


The Freedesktop runtime is the standard runtime that can be used for any application and contains a set of essential libraries and services, including D-Bus, GLib, Gtk3, PulseAudio, X11 and Wayland.

The Freedesktop runtime is maintained here and has a website here.

Available Freedesktop runtimes:

ID Description
org.freedesktop.Platform Runtime
org.freedesktop.Platform.Locale Runtime translations (extension)
org.freedesktop.Platform.VAAPI.Intel{,.i386} Intel vaapi drivers (extension)
org.freedesktop.Platform.ffmpeg-full All ffmpeg codecs (extension)
org.freedesktop.Platform.Compat.{architecture} 32 bits compatible extension
org.freedesktop.Platform.Compat.{architecture}.debug 32 bits compatible extension (debug)
org.freedesktop.Platform.GL{,32}.default Mesa drivers (extension)
org.freedesktop.Platform.GL{,32}.mesa-git Mesa drivers, latest (extension)
org.freedesktop.Sdk SDK
org.freedesktop.Sdk.Debug SDK debug information (extension)
org.freedesktop.Sdk.Locale SDK translations (extension)
org.freedesktop.Sdk.Docs SDK documentation (extension)
org.freedesktop.Sdk.Extension.toolchain-{architecture} SDK cross compilers (extension)


The GNOME runtime is appropriate for any application that uses the GNOME platform. It is based on the Freedesktop runtime and adds the GNOME platform, including:

  • Clutter
  • Gjs
  • GObject Introspection
  • GStreamer
  • GVFS
  • Libnotify
  • Libsecret
  • LibSoup
  • PyGObject
  • Vala
  • WebKitGTK

The GNOME runtime is maintained here.

Available GNOME runtimes:

ID Description
org.gnome.Platform Runtime
org.gnome.Platform.Locale Runtime translations (extension)
org.gnome.Sdk SDK
org.gnome.Sdk.Debug SDK debug information (extension)
org.gnome.Sdk.Locale SDK translations (extension)
org.gnome.Sdk.Docs SDK documentation (extension)


The KDE runtime is also based on the Freedesktop runtime and adds Qt and KDE Frameworks. It is appropriate for any application that makes use of the KDE platform and most Qt-based applications.

The KDE runtime is maintained here.

Available KDE runtimes:

ID Description
org.kde.Platform Runtime
org.kde.Platform.Locale Runtime translations (extension)
org.kde.Sdk SDK
org.kde.Sdk.Debug SDK debug information (extension)
org.kde.Sdk.Locale SDK translations (extension)
org.kde.Sdk.Docs SDK documentation (extension)


The elementary runtime is appropriate for any application that would like to publish in elementary AppCenter. It is based on the GNOME runtime and adds the elementary platform, including:

  • elementary Icons
  • elementary Stylesheet
  • elementary Sound Theme
  • Granite

The elementary runtime is maintained here.

Available elementary runtimes:

ID Description
io.elementary.Platform Runtime
io.elementary.Platform.Locale Runtime translations (extension)
io.elementary.Sdk SDK
io.elementary.Sdk.Debug SDK debug information (extension)
io.elementary.Sdk.Locale SDK translations (extension)
io.elementary.Sdk.Docs SDK documentation (extension)