https://github.com/jarun/buku
is a powerful bookmark manager and a personal textual mini-web.
This might be an unpopular opinion, but I stopped using many online cloud services because they get shut down or acquired by a big fish. Instead, I am using buku[1], a command-line utility to store, tag, search and organize bookmarks on a Linux desktop. But, it should work on any OS due to Python. All I have to do is backup a single ~/.local/share/buku/bookmarks.db SQLite file.
I've been burned at least 3-4x now by bookmark sites shutting down, I just stick with Buku now: https://github.com/jarun/buku
Local, text/cli based, sqlite.
There's also a similar project buku (https://github.com/jarun/buku). I've been using buku for a while given its mature ecosystem around decoupled search-and-viz server, fantastic browser extension, easy browser importing, rich meta-information management et al. The buku server ideally would make sense to be local, and there enters LinkAce.
Although I believe LinkAce has slightly different goals than buku, more around preservability and portability :)
I have a side project called Bukubrow. It's a WebExtension that plugs into Buku, a CLI bookmark manager.
I'm currently rewriting it in PureScript. It's hard to get pure functional programming's foot in the door at work - understandably, the business case against it is reasonable given our employee demographics (i.e. mostly Java devs) - so this is the next best way to learn.
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Bukubrow: https://github.com/SamHH/bukubrow-webext
Bukubrow PureScript dev branch: https://github.com/SamHH/bukubrow-webext/tree/purescript