Tabular data? Can I do this in UR?

[quant]

this can be done in UR very nicely.

Make folders "Articles" and "Websites", where you store your articles and links to websites.

Create attributes "article" and "website" that will be of type "info item" (new in UR 3.5). Create another attribute "date submitted" of type Date.

Now create template "publication" with those attributes assigned.

Create folder "Publications". When you make a new submission, you create "publication" item (could be made as default for that folder). As attributes, you link website from Website folder and an article from Article folder, + submitted date (this can be defaulted to Today for you for example).

UR powerful search will allow you to do easily all the searches you mention ...