Agreed, at some point with some categories I admit in the post that I'm just collecting and reviewing tools, RegEx ones are a good example, for fun. Other times two or three tools exist because there is a specific gap in one filled by another.
It's a nice, comprehensive list. If you (or anyone else) feels inclined it'd be nice to have a heavily biased list of tools that in your opinion are the cream of the crop. A honed version of this bigger list.
Indeed a good idea. Every quarter or so I do lists of Top 3 this and the Esssential 5 that, pulled from this list.