ShellRunner download

Test Unix/Linux shell scripts with syntax highlighting and auto completion.
Counter
Download from the developer's website

Additional links

Purchase at itunes.apple.com for
$1.99

Alternative apps

MacNikto
MacNikto
FREE
rating

AppleScript GUI shell script wrapper built in Apple's Xcode.

F-Script
F-Script
FREE
rating

The F-Script shell provides an interactive command line interface.

Gnome Runner
Gnome Runner
rating

Free game similar to the famous arcade game Lode Runner.

Trminal
Trminal
rating

Open a Terminal window or tab for the current Finder directory.

Script Timer
Script Timer
rating

Flexibly schedule the execution of AppleScript, perl, and shell scripts, as well as Automator workflows and applications.