What is ViewSourceWith
ViewSourceWith is an addon compatible with many mozilla applications.
The main goal allows users to open (and in some cases edit) page source with external applications but you can also...
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ViewSourceWith in action
Settings: You can choose your preferred applications (editors, zippers, etc)
Toolbar button: Click on button to launch default editor, access to menu to choose another application to run
Menu: Editors are accessible directly from context menu or application view menu