The Telegram Bot Ruby SDK by SuHun Han is a Ruby wrapper that communicates with the Telegram-CLI.
The Telegram Bot API provides services that can integrate bots with AI applications in mind (this includes teaching, broadcasting, and connecting features into software components).
A mobile app using the Google Analytics API ran into a really good problem to have. It got popular. The Analytiks app had enough users that it was frequently going beyond the 50K requests per day allotted to each developer. Each users has to authenticate, but then all share a single pool of requests. By contrast, the Twitter API's per-user limit makes more sense.
When it comes to mobile computing most organizations are relying on applications that are running on a number of devices that remotely access data via an API. The folks at Usablenet are leveraging RESTful APIs to make the case for the exact opposite scenario.