Survey on Faceted Browsers for RDF data ?

Hi all,

I'm doing some research to get a comprehensive (as much as possible) view
on what faceted browsers are out there today for RDF data and what features
they offer.
I collected a lot of links to papers, web sites and demos... but I found
very few comparison/survey papers about this specific topic. [1] contains a
section on faceted browsers, but not so exhaustive, [2] mentions some
interesting systems but is a bit outdated.

So, my questions are:
1) Do someone know a better paper/resource I can look at for a survey?
2) Is someone currently working on a survey like this?
3) Does someone have notable additions to my list? (pasted at the end of
the mail)
At this stage I'm interested in both: automatic and configuration based
browsers, free and commercial products, hierarchical and flat facets,
"simple" and pivoting.

thank you in advance

best,

Christian


[1] Survey of linked data based exploration systems (2014)
http://ceur-ws.org/Vol-1279/iesd14_8.pdf

[2] From Keyword Search to Exploration: How Result Visualization Aids
Discovery on the Web
http://hcil2.cs.umd.edu/trs/2008-06/2008-06.pdf



My current, randomly ordered list:

tFacets - http://www.visualdataweb.org/tfacet.php

Exhibit (3) + Babel

Virtuoso built-in search + faceted browser

RDF-faceted-browser -Blog post:
https://sheeeer.wordpress.com/2012/02/08/a-faceted-browser-over-sparql-endpoints/


Facete -http://aksw.org/Projects/Facete.html

PivotBrowser - http://www.sindicetech.com/pivotbrowser.html

Rhizomik - http://rhizomik.net/html/

/facets
Paper: http://homepages.cwi.nl/~media/publications/iswc06.pdf

gFacets - Paper:
http://www.sfb716.uni-stuttgart.de/uploads/tx_vispublications/eswc10-heimErtlZiegler.pdf


Flamenco

Nested Facets Browser - Demo:
http://people.csail.mit.edu/dfhuynh/projects/nfb/

Humboldt

mSpace