features include: real-time feed indexing, instantaneous availability of search data, geo search, automatic faceting, range search (important for e-commerce) and instant insights about your indexed data (e.g. your users seem to be mostly native English speakers with a certain education level, and these are the key phrases they use that distinguish them from the population at large)

IndexTank's engineers have been working together on search technology for several years before building this product. Previously they worked at companies such as Inktomi, LookSmart, Google and Xoopit.