[rkagerer]

Thanks. I used it years ago but it didn't suit my needs. I haven't found an indexing tool that does.

It's the difference between synchronous indexing that's baked into the system (as in file system metadata structures and database indexes, which update at the same time your data is changed) vs. fragile add-ons that index asynchronously (which in general I find tend to be too slow to update, missing results, and prone to breaking).