CallFire is an online text and voice messaging platform designed to meet the needs of a variety of users and organizations. The platform comes with APIs for integrating its functions into third-party applications and services. The CallFire Postbacks API allows developers to get information about their sent messages and phone calls via postbacks. Developers will need a website capable of hosting PHP files in order to accept the postbacks.
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.