I'm the author of Polar - https://getpolarized.io/ https://getpolarized.io/ Some of this functionality will land in the short term. We're working on adding th

I'm the author of Polar - https://getpolarized.io/ https://getpolarized.io/ Some of this functionality will land in the short term. We're working on adding the following: - a sidebar for documents with extended metadata (publication year, authors, abstract, etc) - The ability for notes directly on the document itself. This would give you your 'overview'. Lots of people want to use it as a summary feature. We might actually add a summary field. - links between the documents and directly to annotations. ... in the longer term we're going to add more complicated full-text search of the documents themselves. My background is search so I want to do this right using Elasticsearch as the backend so that we can add more advanced features like clustering, auto-tagging, etc. Search is probaby 90 days away I hope. The other features are on the short term. I might actually flag the summary feature a bit higher as a a lot of people are asking for it and it's pretty easy to add technically but I need to work on some UI around the summaries. Maybe a non-perfect UI is good to get us off the ground. Oh. I'm also working on adding metadata automatically from documents you upload like author, publication year, etc. We do about 2x releases a month so dev time is iterating really fast! If you'd like us to go faster buy premium ;)