The Flowdock Ruby SDK by Rally is a gem that allows developers to integrate the Flowdock API's methods into their Ruby applications. This gem has been tested with Ruby 2.1 and JRuby. It's dependencies are HTTParty and MultiJson.
Twilio has released a beta version of its Conversations API. The unified API allows developers to aggregate messages across channels (SMS, MMS, Chat, and WhatsApp) into a single conversation. Additionally, administrators can control the conversation and supplement with experiential features.
Mavenlink has extended its API-first portfolio strategy with the introduction of M-Bridge Integration & Extensibility Platform. The Platform solves what Mavenlink calls the "hariball tech stack" problem by offering a centralized hub for disparate app integration and management.