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Add Messaging, Voice, and Authentication to your apps with Nexmo APIs

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Getting started with the OpenTok API

Start with these resources to learn how to build your first OpenTok-powered app.

Create a Fast Track
Quickly generate a personalized development plan to help take your app to production faster.

Hello World
See the steps required to start an OpenTok session in just a few minutes.

OpenTok Basics
Dive deeper into the different OpenTok components and how they interact.

Set up a Basic Client (Tutorial)
A step-by-step walkthrough for building a complete OpenTok application for web, iOS, or Android.