It's a good list.

But let's take one category for instance.

Publishing:
They list 10 entries ranging from Picassa to WordPress.  The two problems with this list (and the rest of the categories) is that some are there due to size and first mover status (eg. blogger) and some are missing even though they might have superior flexibility and functionality (eg. typepad or blogEngine dotNet).

And with this list of 100, how in the heck is anyone supposed to make a decent evaluation of even one category.  I mean you should spend some decent amount of time fiddling with the app.  Could be hours or it could be days depending on the use.

So you'll end up using the app with a network effect in place or the one that is "coolest" but maybe sub-optimal.

Still...good list.