I Use This

As Macs are becoming ever more popular, a number of folks have requested a list Mac Apps I use and recommend. This is the list of apps I use on a very regular basis. This does not include the applications that come standard with a new Mac (ie iPhoto, iTunes). In case you are curious, I use Safari as my primary browser.

Main computer

Application Free as in Beer (what?) Category Description/Comments
1Password No Utility Password Manager with incredible browser support.
7zX Yes Utility Reads/writes the 7z compression format.
Acorn Yes+No Graphics/Photo Simple to use, yet surprisingly powerful image editor.
Adium Yes Communication/Internet Multi-protocol IM client: AIM/GTalk/Jabber/Yahoo/Facebook and more. Sadly, does not work with Skype so I still require running two clients at once.
Aperture No Graphics/Photo Pro-level photography application for managing/editing photos. Slow, but very powerful.
AppTrap Yes Utility Makes fully uninstalling an application as easy as installing (just trash the app, it will find all of the preference files left on the system and offer to trash them too)
Caffeine Yes Utility Keeps the screen from sleeping. Useful while watching a WebEx session.
Choosy No Utility Makes managing multiple web browsers easier.
Chrome Yes Communication/Internet Google Chrome browser.
ClickToFlash Yes Utility Blocks flash in Safari, replacing any flash element with a clickable box. Only on-click does it load the flash element.
Coda No Other text editor + file transfer + svn + css + terminal + books + more = whoah.
CoverSutra No Utility Shows music artwork on the desktop, gives iTunes global hotkeys, and more.
Dockdrop Yes Utility Fast sharing tool--uploads any file dropped to it via FTP, WebDAV, or SCP, and puts the link to it on your clipboard.
EEAO No Utility Automatically archives older mail out of your Microsoft Exchange account to a local archive.
Evernote Yes Text Note taking/syncing
Flip4Mac WMV Yes Audio/Video Allows Windows Media files to be played in QuickTime (and other apps that use QT, like Safari)
Fluid Yes Utility Creates SSBs (Site Specific Browser) -- basically makes a webapp into a single stand-alone application so it runs outside of your browser. Great for things like Gmail, bug trackers, etc.
Growl Yes Utility Global notification system
iStat Menus No Utility Gives loads of information, such as memory usage, cpu usage, etc, right in the menu bar.
Little Snitch No Utility Reverse firewall--informs you whenever an app tries to access the internet (unless the app has been whitelisted).
LittleSnapper No Graphics/Photo Another screenshot utility--I only use it for the ability to do a full web page capture (a feature Skitch is sadly lacking).
MAMP Yes+No Other Mac+Apache+MySQL+PHP -- Full stack in one single application that can be started and stopped with a click of the button.
Microsoft Office for Mac 2008 (Ultimate Edition) No Other Comes with Entourage (email, calendar), Excel (spreadsheets), PowerPoint (presentation), and Word (word processing). I don't necessarily recommend this unless you need it for compatibility with work (as I do).
OmniFocus No Other Very elegant and powerful task (to do) manager.
OmniGraffle Pro No Other Diagramming, process charts, layouts/wireframes, prototypes, and more. Like Visio, but elegant.
OmniOutliner No Other Outlining. Idea organization.
Perian Yes Audio/Video Makes QuickTime far more useful--all in one codec package for almost everything except WMV.
QSB Yes Utility Application Launcher, faster than using spotlight. Descendent of Quicksilver, but not yet quite as robust.
Remote Desktop Connection Yes Utility Connect to Windows machines.
Sequel Pro Yes Other MySQL Client. Not nearly as powerful as Toad, but simple and fast.
ShareTool Yes+No Utility VPN for regular people. Free version is limited to 15 minutes of connection time, which I find sufficient for my needs.
Skitch Yes Graphics/Photo Capture screenshots, put them places (easy web upload).
Skype Yes Communication/Internet Chat/VOIP/Video Client.
Spark Yes Utility Global hotkey manager.
SuperDuper! Yes+No Utility Backup, for making a bootable clone of a drive. I also hear good things about the free Carbon Copy Cloner but I've never used it.
TeamViewer Yes Utility Remote support
TextWrangler Yes Text Powerful free text editor--includes a command-line utility so you can type 'edit /etc/hosts' and have it come up in the GUI.
Transmission Yes Communication/Internet BitTorrent Client.
Transmit No Communication/Internet FTP Client. Not free. Cyberduck is a good option if you prefer free.
UnRarX Yes Utility Reads the RAR compression format.
VMware Fusion No Other Virtualization.
YemuZip Yes Utility Makes PC compatible zip files (strips Mac OS specific meta files).

HTPC

We use a Mac Mini to drive our TV. It's awesome, but requires some different software.

Application Free as in Beer (what?) Description/Comments
Air Video No Allows you to live stream content from your HTPC to an iPhone. Really awesome!
Airfoil No If you have an Airport Express, it allows you to stream other audio signals (other than just iTunes, such as EyeTV) to it.
EyeTV No TV Tuner card software—perfect for watching HD over-the-air. It even has DVR-like support.
Hulu Desktop Yes A really nice application for watching Hulu content.
Plex Yes A very nice application for playback of content. It plays back downloaded video files and also has options for streaming sources.
Remote Buddy No Makes the Apple Remote supremely more versatile as it is no longer tied only to the active application. Using Remote Buddy, I can do 75% of what I want to do on the HTPC, including switching between applications and navigating complex menus. If I need a trackpad, I use Hippo Lite on my iPhone. For very complex tasks, I just connect via Screen Sharing.
Syncopation No Synchronizes iTunes music libraries across multiple computers. So it allows my wife and I to have our collections shared on the HTPC for listening on the stereo.