Adium
Adium is a surprisingly versatile instant messaging client with infinite number of customization options and support for virtually every popular messaging protocol. This is surely to be the last instant messaging client you will ever want.
[Visit official Adium web site]
MenuMeters
MenuMeters is an essential hardware monitoring tool that installs into the top menu bar and provides essential system utilization information. It is simple yet versatile enough to please most users out there. One thing we wish MenuMeters had was the ability to display the amount of hard drive space remaining and in use. However, for advanced users, there is a more comprehensive and full featured alternative available called iStat Menus which can be purchased for $16 US dollars and in case you are wondering - is totally worth it.
[Visit official MenuMeters web site]
Growl
Growl is the ultimate on-screen notification utility for the Mac that integrates nicely with a lot of Mac applications out there. The slew of customization options and the supported software means it can be tailored to just about any user and their preferences.
[Visit official Growl web site]
VLC
VLC is a versatile and full-featured cross-platform media player that can tackle most popular audio and video formats on the market today. It has an absurd amount of customization options which makes my head spin but is sure to please advanced users.
[Visit official VLC web site]
Burn
Burn is a simple yet advanced burning utility for the Mac. It supports a wide range of video and audio files and exposes advanced options and settings.
[Visit official Burn web site]
The Unarchiver
The Unarchiver is a better and more versatile replacement to the built-in unpacker that ships with Mac OS X. It supports more file formats and integrates nicely with the Finder. The Unarchiver also works with foreign character sets and can unpack files created with other operating systems. Its major strength are versatility and the easy of use.
[Visit official Unarchiver web site]
Adapter
Adapter is a freeware video converter for both Mac & PC. It even lets you convert audio and image files. With Adapter it is quick and easy to convert between different file formats.
[Visit official Adapter web site]
Gimp
Gimp is a powerful open-source GNU Image Manipulation Program. It is great for photo retouching, image composition and image authoring. It may not be as feature-full as something like Photoshop but should be enough for most day to day photo-chops.
[Visit official Gimp for Mac web site]
Azureus aka Vuze
Azureus aka Vuze is an advanced full-featured bittorrent file transfer client and server. Azureus exposes a mountain of advanced options and makes them available to the user for customization. It is also easily extended and enhanced via numerous available plugins.
[Visit official Azureus/Vuze web site]
Cyberduck advanced cross-platform file transfer client
With Cyberduck you can connect to any server with ease thanks to its easy to use user interface and support for a variety of servers. Cyberduck supports FTP, SFTP, WebDAV, Amazon S3, Google Storage, Windows Azure, Rackspace Cloud Files, and Google Docs.
[Visit official Cyberduck web site]
