The best alternatives to Lync SSO are Amazon, WorkOS, and FusionAuth. If these 3 options don't work for you, we've listed a few more alternatives below.
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Amazon.com, Inc., is an American multinational technology company based in Seattle, Washington, that focuses on e-commerce, cloud computing, digital streaming, and artificial intelligence.
WorkOS provides APIs to make your app Enterprise Ready, with pre-built features and integrations required by IT admins. Start selling to enterprise customers with just a few lines of code. Add Single Sign-On (SSO), Directory Sync, Audit Logs and more to your app today.
FusionAuth is the customer authentication and authorization platform that make developers' lives awesome. You'll get all the features your app needs like user registration, SSO, MFA, and more, plus a customizable, scalable solution you can run on any computer, anywhere in the world.
LoginRadius for Developers is a developer community tool to integrate secure Authentication and Single Sign-On (SSO) with a single code. On top of that, it lets you easily manage your users from dashboard.