I'll be giving polarized a look this weekend and compare with zotero!
I love the idea of Polar for document management, and Roam for knowledge management, so I'd love to find a way to use both
The biggest challenge is deletions though so I'm still trying to work out the ideal sync framework.
Also, while I can see tags being useful, I don't think it'll really be Zettelkasten-like until you can link from one annotation to another.
Also, going to work on the ability to link them together with a search and auto-complete system so that you can just start typing tags, or the body of the note, and then they can be linked.
We're adding support for DOI lookup and APIs like Arxiv so you could just add a DOI to polar and it will fetch the PDF and keep the metadata.
Will also support export to bibtex too.
Our big focus right now is shipping 2.0 so that we have a more modern platform that can scale us moving forward.
Here's a video explaining the new functionality:
https://www.youtube.com/watch?v=6M6jNlairGc
Basically all the documents you read can have tags. So you can manage all your documents via whatever tag you want.
You can then read those documents in Polar directly and highlight parts of text that are interesting.
These highlights, notes, comments, and flashcards that you create can also have tags.
We call these annotations. We then have an annotation manager which you can manage by tag so you can pivot everything around the tags you're working with.
This version is pushed to the web version of Polar now and the new desktop version will make it out this weekend.
We're also working on a new Polar 2.0 which will support Android and tablets and have better pen support too so you can work directly in a tablet rather than a desktop/laptop.
We're also working on a dark mode but first need to get 2.0 out the door.