RingCaptcha

RingCaptcha provides SMS and voice verification services, as well as SMS traffic analytics, monitoring and anti-fraud protection. Put simply, it is about building software for you when nothing off the shelf fits.

The natural audience is companies with a specific process to automate. They also list Analytics, Developer APIs, Developer Tools, Fraud Detection and Mobile, so expect those to show up in the feature set. They are a small team, 11 to 50 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.

RingCaptcha is based in San Francisco, California and around since 2012. More on ringcaptcha.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.

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