Doug makes a list of useful links. There are a few notable omissions:

Patron Mail should be listed under e-mail services. For all their shortcomings, they cater heavily to arts organizations.

Modx should be listed with the other Content Management Systems.

RapidWeaver should also be listed under the CSM heading. Very cheap and very easy way to create valid XHTML and CSS.

In the next version of this list perhaps “Software” should be its own section.

And to answer your question: Handbrake is the best way rip DVDs on a Mac or MEPG Streamclip if you want to copy from the web.