Web development

Text editors

TextMate is my prefered text editor on OSX, it manages to be the simple whilst doing lots of cool things. For a cross-platform choice used to use  jEdit. Aptana(/Ecplise) is probably the most popular IDE across OSX and Windows.

Development environment

For quickly setting up an Apache/PHP/MySQL development environment, Entropy is production ready and not too hard to install. For a GUI install and easier on/off buttons, try MAMP.

These days I tend to use MacPorts to install my dev environment, it matches a linux hosting box much more easily and can install other packages, although it is still slow to install.

Graphical editors

I’m not a graphics person really, I generally just need something for editing pictures and graphics for web use, I don’t really ‘create’ graphics as such. Graphics Converter seems to fit the bill, although it isn’t free, it has good export options and easy cropping tools. Another option is ImageWell.

Photos

iPhoto is pretty good for being you’re picture library, although I may look into Apature (>=2) at some stage.

SVN

SVN seems to be baked into Leopard, so if you’re happy with the command line, that will do you. For a graphical SVN tool I use Cornerstone.

Diagramming

Omnigraffle is something I’ve heard of several times in references to creating IA diagrams, a Mac enhanced version of Visio if you like.

Macromedia/Adobe

The macromedia studio Adobe Creative Suite is also available for the Mac.