Elastic Search is a search engine with low memory footprint and operates on top of Lucene. Is it possible to provide Elastic Search as part of the Web App Gallery?
What do you consider a "low memory footprint"? You're talking about a search engine that runs on top of another application, so it already sounds like we're past the low memory use stage. In any event, it isn't something we've considered for the app installer. We tend toward the more popular applications there, since their is maintenance overhead. If there wasn't we could offer a thousand apps in there.