Phenomenal collection but like the parent of this message, I have many similar sites bookmarked but without a good bookmark manager (Chrome), it's hard to add meta data like "I really like this page's JSON formatter" etc.

I might have a go at a making meta-utility site when you enter names, descriptions, tags etc. of a utility and it lists relevant sites.

To the parent's point about a good DOT COM, I have one that might be perfect since I seem incapable of finishing the project I purchased it for decades ago.