The Ecwid C# SDK by Nicholas provides models and classes for the API. Interfaces supported include Orders API, Products API, and Instant Notifications API. Learn how to use the SDK at https://github.com/kroniak/extensions-ecwid/wiki
As announced earlier this year, Google officially retired the Hangouts API. As Hangouts is repositioned for enterprise use, the need for some of the social, consumer focused video features of the API are no longer a priority. Accordingly, the end of the API was first announced and now realized.
Snip.it lets you collect what you see on the web, be it an article, video, or image, then categorize it, add your own comments, and share it. The Snip.it API, currently in version 2, is RESTful with the response in JSON. Snip.it itself features a backbone.js-powered page load structure to speed things along.