Trello PHP SDK by Tyler Schwemley is a wrapper for accessing the Trello API from PHP code. The wrapper requires PHP 5.3.0+, the cURL library, a Trello API developer key, and OAuth for PHP (which is included in this repository).
Part of HipChat’s popularity is down to the fact that it offers integrations with services like Google, Asana and GitHub, as well as hundreds of others. This tutorial on the Medallia blog shows followers how to set up a system that pushes notifications to a Hipchat room to keep your team informed.
DoneDone, issue tracking service, offers the DoneDone API that enables developers to include DoneDone's feature set via existing workflows and third party applications. DoneDone's premier goal is to streamline and simplify projects and eliminate the use of spreadsheets, sticky notes, email chains and other traditional forms of cumbersome notes and reminders.
VisionProject, project management software provider, offers more than a web based property management platform; VisionProject allows developers to integrate VisionProject's features into existing web properties and applications through the VisionProject Web Service API. The API includes access to essential project management tools, as well as enhanced features that are often presented as separate tools (e.g. time reporting, document management, CRM, etc.).