The Erply C# SDK by Erply is available for download fro the official site. It allows API interaction to access inventory, products, customers, webstore, management, documents, and reports. Requests and responses available in HTTP/POST and JSON/XML respectively.
In partnership with Intuit, the provider of the very popular QuickBooks Online SaaS app, Lighter Capital has established a $15M investment fund in order to make additional financial resources available to 3rd party developers who are part of Intuit's growing developer network.
Google has just announced that over 40 new metrics and dimensions have been added to the Google Analytics API. The new data points can be queried using the Core Reporting API and allow developers to create reports similar to those found in the Google Analytics Web interface.
Now that YouTube's Reporting API has been live for roughly half a year, YouTube has started adding new features. The latest new feature is historical data. Historical Data provides a 180 day lookback from a particular job's schedule date. Historical data is available beginning July 1, 2015.