PubNub is a cloud-based, real-time messaging service that functions on mobile phones, tablets, TVs, HTML5 web browsers and game consoles. It is a Push technology intended specifically for high-message-volume applications and games. The API allows users to publish and subscribe to messages. V2 of this API contains methods to retrieve Presence (who is on a what channel, when, and status), fetch message history, and manage metadata objects. It uses HTTP calls and responses are formatted in JSON and JSONP.
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.