OAuth2 Libraries

https://oauth.net/code/ 

This page provides links to many different libraries for handling OAuth2 from the client side, in a variety of different programming languages. 

If you are building an integration with our API, you will likely want to use something akin to one of the resources listed here, at least initially. Implementing handlers in your code for OAuth2 'Authentication Code Flow', can be somewhat time consuming, especially given that there are a multitude of well maintained libraries out there.