MacPorts
Inkscape 0.92 is available via MacPorts both as an X11 build and as a native Quartz build. If you have MacPorts installed, you can build the X11 version using
sudo port install inkscape
or the Quartz version using
sudo port install inkscape +quartz
The native quartz build can potentially be less stable, and less well integrated into the desktop environment (e.g. for copy-pasting).
Packaged installers for MacPorts are available for MacOS X versions 10.4 (Tiger) to present 10.12 (Sierra).
To install MacPorts, you need to install Xcode first. See here for detailed installation instructions for MacPorts.
The MacPorts Inkscape builds are provided by MacPorts. If you encounter issues with installing via MacPorts, please contact them via their bugtracker.
