Token-Based Security: 3 Possible Alternatives To IdentityServer

At least in the .NET space, IdentityServer is a prominent candidate for implementing token-based security in your .NET and ASP.NET applications, server-side or SPAs. After the license change of the popular open-source library, many are wondering if there are any viable alternatives. If you are an existing IdentityServer user, you may want to check out their license model and see if it would be feasible for you to buy a license and just continue with it. Switching the token server to a different solution may not be that easy and cheap.