Some of the open source API Management Solutions are

• WSO2 API Manager - http://wso2.com/products/api-manager/

WSO2 API manager is just one tool in the massive open source catalog that WSO2 brings in. The company provides a number of open source tools including Identity Server, ESB, Data, Application and API management solutions.

• Response - http://www.openrepose.org/

Can use to build stacks of reusable software components. These components can be leveraged by service developers to perform common A...

• check abstract equality i.e. it does the necessary type conversions before doing the equality comparison
  

Token-based authentication is a protocol which allows users to verify their identity, and in return receive a unique access token. During the life of the token, users then access the website or app that the token has been issued for, rather than having to re-enter credentials each time they go back to the same webpage, app, or any resource protected with that same token.

Auth tokens work like a stamped ticket. The user retains access as long as the token remains valid. Once the user logs out o...

You can solve the issue by adding below lines in web.config file.

 <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral"/>
        <bindingRedirect oldVersion="0.0.0.0-8.0.0.0" newVersion="8.0.0.0"/>
      </dependentAssembly>
    </assemblyBinding>
  </runtime>