The AgileZen C# SDK by Ian Davis allows API access, providing code to communicate with the API. AgileZen offers authentication, formatting, filters, enrichment, and pagination in its developer site. Additional information at http://dev.agilezen.com/
When it comes to the course of creativity, some kind of order and management can turn a good idea into something successful and highly profitable. Having an effective tool that handles all the loose ends so creatives can focus on creating, can only mean better results at the end of the day. Shotgun is a service aimed at helping creative studios run smoothly and efficiently by providing the necessary tools to see a project to completion. Shotgun's API allows developers to access this functionality and easily integrate it with other applications.
The Ontimenow Scrum API is an Agile management tool with REST calls and JSON responses, and uses Oauth2 authentication. The API allows calls to check contacts, view defects, check features, tasks, incidents, projects, releases and users.