The Sinch SDK for Android lets developers add voice calling and instant messaging capabilities to their iOS based mobile apps. The SDK handles signaling and audio management. In addition it offers support for:
App to app calling
App to phone calling
Instant messaging to single and multiple recipient
Telegram has released Telegram Bot API 2.0 which features new inline keyboards, on-the-fly message editing, and more. Inline bots have also been upgraded and can now send documents, contacts, locations, videos, MP3s, stickers, animations, and other types of content available in Telegram.
Last September, OneTok announced that its API moved out of beta and was publicly available for developers to integrate speech recognition functionality into any app. Since then, OneTok has overhauled the platform, refined its focus, and readied itself to better meet developer needs. Today, the platform focuses on audio transport and processing. OneTok has captured its core functionality in an SDK that developers can embed in existing apps or websites.