Semble

semble.so

A social bookmarking app built by Cosmik Network as one of their first atproto applications.

Obsidian Plugin

https://community.obsidian.md/plugins/semble

Display all web links in the current note in a sidebar pane that updates as you type. Save links to your Semble library, browse related links, link items together, and see community save counts and your saved status at a glance.