plist Editor - Reads and writes both text and binary .plist files.
PlistEdit Pro - PlistEdit Pro is the most advanced property list and JSON editor written for macOS.
PrefEdit - PrefEdit is an application to manage nearly all aspects of the preference system contained in every...
Mac OS X Prefs Editor - Edit preferences of any application. Like the 'defaults' command in Terminal.
Eddie - Eddie is a programmers editor for Mac OSX and Gnome Linux.
Filza File Manager - Explore files and folders with list view or grid view. View / edit files with powerful viewers.