I built carefulwords.com simply because I wanted to type a word into the address bar and get a large list of synonyms and some historical quotes using the word quickly. For example:
https://carefulwords.com/solitude
https://carefulwords.com/think
etc. Also unlike thesaurus.com, the search bar actually focuses so you can just start typing!
It's not perfect, I need to do a lot of editing, but nonetheless I use it almost every time I write, now.
The site is a little over 30,000 static HTML pages built with a number of TypeScript scripts that compile some sources for synonyms, parts of speech, and the quotes.
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