Inter Systems Cache

"CACHE is a multidimensional database that uniquely combines robust objects and robust SQL, thus eliminating object-relational mapping. Cache enables rapid Web application development, extraordinary transaction processing speed, massive scalability, and real-time queries against transactional data - with minimal maintenance requirements."

PRICING

Cache is pretty annoying in that they don't have any list prices -- they'll make you run the sales gauntlet to get a quote no matter how small or simple the project. They do have offer a free version(s) for single-user or noncommercial use.

Vendor:	Intersystems
Subject:	Postrelational
Subject:	MUMPS