I have a document challenge. It’s a perfect job for Lotus Notes. What do I use in its place today?

I want to keep track of a bunch of web sites, say 100-200 of them. For each, I want a free-form document that lets me keep notes about them. But I also have structured information I want to track for each, like an email contact, a GitHub repo, some statistics, and so on. I want to be able to display these documents in summarized lists, so that some of the structured information is displayed in a table, and I can sort and filter the documents based on that information.

This is exactly what Lotus Notes did well. Is there something that can do it now? Ideally, it would be part of a Confluence wiki, but other options would be good too. (Please don’t say SharePoint...)

CouchDB is the perfect backend for a system like this (no wonder, it was written by Damien Katz, and inspired by his time at Lotus), but is there a GUI client that makes it a complete application?

Say what you will about Lotus Notes, it was really good at this kind of job.