This is a basic RDF browser, but it works fine and is very simple to use. If a URI is dereferenceable (i.e., if it is enabled to return RDF triples in response to a specific request by the browser), the browser displays all the triples associated with that URI as a TURTLE document, with clickable URIs.
However, there's one aspect that could be improved. Currently, to find all triples where a given URI occurs as either subject or object, you must examine the entire TURTLE document, as groups of triples are alphabetically ordered by subject. It would be beneficial to include, in the section with the same URI as subject, also the triples where that URI is the object, even though this means that the same triple would appear twice in different sections.

If you visit an RDF enabled URL, the RDF Browser opens your eyes.
It can sometime takes a bit of time to see the page rendered, but it has probably good technical reasons (fetching all the relevant context and also parsing larger RDF document within browser may be a challenge).
I would appreciate if I could "switch off the add-on on given page for a moment".

Using this tool to show my students RDF files.