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I believe logseq.com fulfills those needs. Using the "properties" feature, you can tag any block or page.

What's more you can even write queries [0] to ask interesting questions about your notes, like what TODOS were written within a time period, etc.

Could you explain quick-linking a little more?

[0] https://logseq.github.io/page/Queries

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By quicklinking I mean you can quickly link between pages, usually by using some kind of keyboard shortcut or shorthand. e.g. The [[ in Confluence has become common in most tools. (You type double square bracket and sometimes it has a prompt with recent pages, or you just type the page name and close with two more closing square brackets).

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