[This API is now part of Microsoft Graph. This profile is being maintained purely for historical and research purposes.]
From their site: Windows Live ID Web Authentication enables you to authenticate users on your Web site and offer personalized access to your siteï¿½s content to any of the millions of registered Windows Live ID users.
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.