How to list all available .plist keys on a certain domain application by defaults command?

This is not a trivial task, if I recall correctly people run the strings utility at the command-line against an Application, and look for things that match a structure similar to com.domain.FeatureName. (com.apple.iTunes, ch.cyberduck.CyberDuck, com.panic.Coda, etc.)

The likely easiest way to manage these overrides is by a System Preferences Pane by the name of Secrets. Using this installs a Preference Pane into System Preferences, and gives you an interface into choosing an application and changing their settings to your particular preference.

Found a website dedicated to these Mac OS X defaults write commands, some handy commands for Mac OS X Lion & Mountain Lion.

http://www.defaults-write.com

There really isn't a notion of "available" keys. The application is free to read whatever keys it wants. Most people discover "secret" defaults keys by using strings to look through the application binary to see what keys it will try to read.

Most people here want to do everything via the command line, but I have a more practical suggestion.

These two programs described below list a great deal of the known command-line customizable features of Mac OS X applications, sorted by application or function. The advantage is the list of functions is provided for you; you don't have to go searching Google to find out what the functions are and the command-line sequences needed to modify each one.

There are several freeware or commercial applications that provide a graphical user interface listing most all of the customization options that can be modified via the Terminal. To activate any of these features, using these progams I'm describing, you do it within the application's GUI and you have no need to use the command line at all. You don't need to know anything about defaults write or .plist files.

Two of these apps are:

TinkerTool

which is free, and

MacPilot

which has just been updated with new Lion features, and costs US $20.00.

These are programs that I own and use.

Download the free TinkerTool and the trial version of MacPilot and and click through all the tabs to see all the myriad features you can customize. There are too many to list here.

Update

Developer Frederik Wiker has released freeware apps (donations accepted) for creating defaults write customizations specific to Lion and Mountain Lion; many of them also work fine for Mavericks (Mac OS X 10.9) as well.

Download these and see what customizations are available to you.

Lion Tweaks

Mountain Tweaks