You may find https://tabbles.net/ useful. Source: about 1 year ago

I've also used https://tabbles.net/ before, to tag and annotate files on windows. Source: about 1 year ago

So the idea behind the organizing software Tabbles is great, I love it. File tagging, nested tags, tagging rules...etc. But the UI and some other things are just...a burden. Non intuitive, a little irritating. Source: almost 2 years ago

There is Tables, unfortunately it isn´t open source. Source: over 2 years ago

Torn between TagSpaces, Tabbles, but I'm leaning toward this. Source: over 2 years ago

There's also Perkeep [1], though it seems like development has slowed down on it in recent years. [1]: https://perkeep.org/. - Source: Hacker News / 8 months ago

You probably just want to pay the cost for hosted. But if you're set on running it yourself, https://perkeep.org/ is great. Source: about 1 year ago

Not sure how actively it’s being developed but it sounds like perkeep is exactly the idea you’re looking for. Source: over 1 year ago

So... It just occurred to me that you need to know about https://perkeep.org , I have been following it since the beginning when it was called Camlistore, and notably this talk https://www.youtube.com/watch?v=yxSzQIwXM1k ( from this page: https://perkeep.org/doc/ ). Source: over 1 year ago

If you want to live dangerously, this might eventually be useful: https://perkeep.org/. Source: over 1 year ago