The Flowdock PHP SDK by Rémi Marseille allows API interaction to implement collaboration features in the workplace. Features include chat, email, and messaging for groups. Documentation available shows installation, Push API, and contribution.
The Nexmo SMS API lets you send and receive text messages around the world without having to worry about which carriers the recipients are subscribed to. This tutorial shows you how to use the Nexmo C# Client Library to send and receive SMS messages from your ASP.NET MVC web app.