The Nexmo Voice API is the easiest way to build high-quality voice applications in the Cloud. With the Voice API, you can build apps that scale with the web technologies that you are already using, control the flow of inbound and outbound calls in JSON with Nexmo Call Control Objects (NCCO), record and store inbound or outbound calls, create conference calls, and send text-to-speech messages in 23 languages with different genders and accents.
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.