Class libraries (SDKs/API overviews) for the Episerver platform provides an overview of classes and interfaces that you can use when building and customizing system functionality. 

Note: Not all products in the Episerver platform have class libraries in this format. See the Episerver developer guides instead for guidance.

     
Episerver CMS class libraries

Episerver Commerce class libraries

Episerver Find class libraries

Episerver Social class libraries