open-file package
An Atom package that allows users to open files in their respective default app.
Press alt-w to open the currently open file in its default application.
Right-click an item in the tree view (or open the context menu on an item in the tree view) and select Open File to open the currently open file in its default application.
Right-click an item in the text editor (or open the context menu on an open editor) and select Open File to open the currently open file in its default application.
The default keymap for this package (alt-w) conflicts with my view-in-browser package and might conflict with other packages. You can disable this by clicking on this package in Settings > Manage Packages.
On the Mac the alt-w command works, but files with no default application are not opened/nothing happens.
For references/attribution, see the licenses provided in the node packages installed.