I wouldn't take silence as a lack of interest, just a lack of time to dig into it.
I didn't look at any of the code, but playing arround with the UI it seemed really slick. Assuming there aren't any licence incompatibilities with the libraries the app depends on, i think it would probably make a great contrib. (hmm... actually i would probably categorize this as a "client" not a contrib, but that's a semantic question) I would start be emailing solr-user and seeing what the whole Solr community thinks of it -- while it may serve as a good starting point for Spring folks wanting to wire up their own UIs, I also think non-Java folks looking for a glossier UI then the simple admin screens Solr has would really get into it. the next step from there is just submitting a patch. -Hoss
