The Google Identity Toolkit API allows developers to create apps and websites that support user authentication via Google, Facebook, Yahoo, Microsoft, Paypal, and AOL. The toolkit includes UI elements for handling basic login flows, account linking, email changes, and password changes. The result of the login flow is a unified user object that represents the authenticated user, allowing them to begin a signed-in session.
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.