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Settings Host Planning

Layout Mockup

Other Projects’ Solutions

ElementaryOS

ElementaryOS seems to handle it via GtkPlug and an ini-format .plugin file, perhaps aim for compatibility with their API? Their example is pretty easy to follow.

GNOME3

GNOME3 appears to use GModules to implement their settings daemon. Unity uses a fork of this.

KDE

KDE seems to work based on configuration skeletons: you specify the fields it will expose, and then it exposes them properly.

OSX?

To Be Researched

iOS

To Be Researched

Android

To Be Researched