Buttercoin

Buttercoin is an open source digital trading engine used to arrange trades in an order book. The job it does: building software for you when nothing off the shelf fits.

It makes the most sense for companies with a specific process to automate. Related areas on their profile: Bitcoin. They are a very small team, 1 to 10 people, which usually shapes who they work with. Small vendors mean quick answers and real influence on the roadmap, but check who covers support when someone is out.

Buttercoin is based in Palo Alto, California. Their site is buttercoin.com.

Things worth asking about: portfolio relevance, who owns the code, and how they handle changes. A short pilot with your real data tells you more than any demo.

If you have worked with Buttercoin, tell the next buyer what you paid and what surprised you. That is the part of this page we cannot write.