Alexa vs OpenTok: What are the differences?

Developers describe Alexa as "A cloud-based voice service *". It is a cloud-based voice service and the brain behind tens of millions of devices including the Echo family of devices, FireTV, Fire Tablet, and third-party devices. You can build voice experiences, or skills, that make everyday tasks faster, easier, and more delightful for customers. On the other hand, *OpenTok** is detailed as "Build live interactive video, voice and messaging into your web and mobile apps". It adds the clarity and emotion of face-to-face communication to your brand whether you're developing for the web, iOS, or Android. We make the integration of high-quality live video a breeze so that you can focus on building a great product.

Alexa and OpenTok can be primarily classified as "Voice and SMS" tools.

HireArt, rapt.fm, and Tonpsy are some of the popular companies that use OpenTok, whereas Alexa is used by Feather Direct, LLC, Crit Cola, and Salte. OpenTok has a broader approval, being mentioned in 12 company stacks & 16 developers stacks; compared to Alexa, which is listed in 3 company stacks and 25 developer stacks.