Extras
GrowlDict
Using GrowlDict
Using GrowlDict is a 3 step process:
1. Select the text you would like to look up.
2. Select the GrowlDict service in the Services menu for the application with the word you want to look up.
3. The definition will appear in a Growl notification.
Warning!
GrowlDict has been discontinued and is no longer supported.
Installing GrowlDict
In order to install GrowlDict, you will need to place it into the Library/Services folder, located in your home directory. Once GrowlDict is placed there, you will need to log out of your computer, and then log back in.
Requirements
OS X 10.3 or higher
Growl

growlnotify
About
growlnotify is a command-line tool to post Growl notifications. You can control all aspects of the notification (within any boundaries set up in the Growl pane of System Preferences). It can be very useful in shell scripts.
Installing
In your shell, cd to the directory on the Growl disk image containing growlnotify, and type ./install.sh. That script will install growlnotify to /usr/local/bin and the manpage to /usr/local/man.
Building from sources
Running 'make' will build growlnotify into your build folder if you want to test it before installation.
Running 'make install' will install growlnotify into /usr/local/bin and install the manpage into /usr/local/man. It will also do a build first if necessary.
The Makefile uses xcodebuild internally, with the Deployment buildstyle.
Usage
Usage: growlnotify [-hs] [-i ext] [-I filepath] [--image filepath] [-p priority] [title]
Options:
-h,--help Display this help
-n,--name Set the name of the application that sends the notification
[Default: growlnotify]
-s Make the notification sticky
-a,--appIcon Specify an application name to take the icon from
-i,--icon Specify a file type or extension to look up for
the notification icon
-I,--iconpath Specify a file whose icon will be the notification icon
--image Specify an image file to be used for the notification icon
-p,--priority Specify an int or named key (default is 0)
Display a notification using the title given on the command-line and the message given in the standard input.
Priority can be one of the following named keys: Very Low, Moderate, Normal, High, Emergency. It can also be an int between -2 and 2.
To be compatible with gNotify the following switches are accepted:
-t,--title Does nothing. Any text following will be treated as the
title because that's the default argument behaviour
-m,--message Sets the message to the following instead of using stdin
The manpage provides more information on the usage of growlnotify. Just type 'man 1 growlnotify' after installing growlnotify.

GrowlMail
About GrowlMail
GrowlMail is a plug-in for Apple Mail that posts a Growl notification every time new mail arrives containing the text of the message.
Example notification for a new mail.
Installing GrowlMail
Quit Mail
Open the GrowlMail package that you will find in the Extras folder of your download.
Restart Mail.
Using GrowlMail
You will find the preferences in a new tab of the normal Mail preferences (see image). You can disable GrowlMail, or disable notifications for mails marked as junk by Mail. If desired you can enable or disable notifications for specific email-accounts.

Mail preferences after installation of GrowlMail

HardwareGrowler
About

HardwareGrowler is an application that sends Growl notifications when devices are connected or disconnected from your Mac.
Supported 'Devices'
- FireWire
- USB
- Bluetooth
- FileSystem Volumes
- Network Interfaces
Installation:
Copy HardwareGrowler (from here on it will be called HG) from the disk image to either /Applications or /Applications/Utilities (The exact location doesn't matter, so putting it in Utilities might make it more out of the way).
Go ahead and open up HG. You'll notice that the application resides in the dock, but the application doesn't provide very many menus. The only one of any significance is HG -> Preferences. The only is option available is to have Hardware Growler show connected devices when it opens. Make your choice, then quit HG.
Disabling the dock icon:
Because HG doesn't really have any user-interaction features, you may follow these steps to disable the dock icon. Navigate to wherever you placed HG and right-click on it and select "Show Package Contents." Open up contents and then right-click Info.plist. Highlight "Open With" and select TextEdit from the list (If TextEdit is not in the list, choose "Other..." and navigate to TextEdit and click "Open").
Paste the following just after
<dict>:
<key>LSUIElement</key>
<true/>
Then save and exit the file. You can go ahead and close the "Contents" window now; you shouldn't be needing it any more. Now open up Terminal and type "touch " and drag the HG into Terminal and then hit enter. HG should now be set up to not appear in the dock.
Setting HG to open on login:
The following steps are for 10.4 (Tiger) users, but the general idea behind them should be 100% sound for any version. Open up Systems Preferences and select the Accounts pane. Then click the "Login Items" tab and drag the HG icon into the list. That's it, you're done!
FAQs:
Q: Does HardwareGrowler affect anything on my computer?
A: HardwareGrowler is designed to not touch any files on your computer; all it does is monitor what devices are attached to your computer and notify you if anything changes.
Q: What are "SmokeStacks" and "VolumeNotifier"?
A: They are products similar to HarewareGrowler in that they provide Growl notifications for hardware changes, but they have fallen out of production because HG was introduced by the Growl team. Any desireable features that they had, but aren't included in HardwareGrowler, should be requested on the trac system.

GrowlTunes
Installing GrowlTunes
Place GrowlTunes in your Applications folder by dragging and dropping it from the Growl disk image. GrowlTunes comes on the Growl disk image, in the Extras folder.
Using GrowlTunes
Once you have installed GrowlTunes, double click it. This will put the headphones shown here in the menubar at the top of your screen. From here you can control GrowlTunes.
For users of iTunes 4.7 and later, that is all you have to do to get GrowlTunes working. Note: GrowlTunes does not poll for its information with iTunes 4.7 and later.
For iTunes 4.6 and below, the most important part of using GrowlTunes is the polling button at the bottom of the menu. This allows you to turn on and off polling of iTunes (asking it what song is currently being played).
Once you get GrowlTunes to start polling, you should see a bubble like the image below. You will see one of these each time the track changes in iTunes.
Requirements
Mac OS X 10.3 or higher
iTunes
Growl
Artwork
Starting with Growl 0.6, GrowlTunes can get artwork from Amazon.com. (Growl 0.5 came with a version that did not have this capability.) If GrowlTunes does not see artwork in the current track playing, and it also does not see that the album artwork was previously downloaded, it will download the track. GrowlTunes does not write this information to the track, but instead to files on disk. GrowlTunes will place the downloaded artwork in your home directory, in Library/Images/Music.