AuSIM

AuSIM, Inc is a provider of audio simulation and measurement services. In practice that means building software for you when nothing off the shelf fits.

The natural audience is companies with a specific process to automate. As a very small company team themselves (1 to 10 people), they tend to serve customers of a similar scale best. You will probably talk to the people who build it, which is great until you need 24/7 support.

AuSIM is based in Mountain View, California and around since 1998. Their site is ausim3d.com.

Things worth asking about: portfolio relevance, who owns the code, and how they handle changes. Ask for a trial on your own data, not a canned demo.

Every review on Revaw shows how it was verified, so if you know AuSIM well, your review carries weight here.