I'm putting together a public/free Rockset feature comparison matrix.
I want to help educate customers (and other vendors) on what Rockset did so well and what considerations are needed to find a replacement.
https://bit.ly/rockset-feature-comparison
HN'ers I realize you are wizards, don't shoot the messenger. Just trying to help.
I would like to add CrateDB (I work there) to the list. CrateDB is a distributed SQL database purposely built for real-time analytics across large datasets of structured and semi-structured data. Similarly to Rockset, it indexes all data in real-time (text, vector, geospatial, time-series, and JSON) for the most efficient search and fast ad hoc query execution at any scale. It is built on top of Apache Lucene and unlike Rockset is open-source (https://github.com/crate/crate).
Rocket frequently comes up among other solutions our users were looking at before choosing CrateDB. For example https://cratedb.com/customers/govspend.