Mac OS X Portable Apps
Mac OS X Portable Apps: Free portable Mac OS X applications you can run from a USB flash drive—ideal for on-the-go productivity, file management, and development tools.
Portable Adium OS X

Portable Adium is a Mac OS X instant messaging chat client that can be used to chat via AIM, Windows Messenger, Yahoo Messenger, Google Talk, ICQ, Jabber, Apple Mobile Me and more. This version of Adium has been repackaged to run from a portable device such as a USB flash drive or micro sd card. All settings are stored on the removable media leaving no traces behind on the host Mac computer it is being run from.
Portable Cyberduck Mac OS X FTP

Portable Cyberduck is a Mac OS X portable FTP client browser application based purely on Cyberduck. It is an FTP client you can bring with you to run from a USB thumb drive, external hard drive, memory card, iPod, other portable device. Now Mac Os X users can have FTP access portably no matter where they go. All settings are stored on the portable device leaving no traces behind on the Mac computer Portable Cyberduck is being run from.
Portable Thunderbird Mac OS

Portable Thunderbird for Mac OS X is a convenient, standalone version of the popular Mozilla Thunderbird email client, tailored specifically for Apple’s Mac users. This portable edition allows you to carry your email accounts, contacts, address book, and personalized settings with you on a USB drive or other portable storage device. It’s an ideal solution for users who need to access their email from multiple Mac computers without installing software on each one.
Portable Firefox OSX

Portable Firefox OSX for Mac is based purely on the popular Firefox Web Browser but was revamped to be run from a USB flash drive or other removable storage device. Enabling Apple Mac OS X users to bring their Firefox favorites, personalized settings and secure login passwords with them to run on any Apple based Mac Operating System. Just like their fellow Microsoft Windows users.