Hylinker - Bidirectional Annotation

Hylinker is a browser extension that helps you annotate text, images & videos and connect them with bi-directional, one-to-many links. You can manage annotation & take notes with a Twitter-like interface. Hylinker is offline-first. All functions except cloud service are free to use and available without signing in. Cloud services include syncing annotation with Hylinker’s server and note-taking Apps (OneNote for now). Also, you can retrieve external notes in Hylinker and connect to them.