The term "Abaqus Plug-In" in the context of Ansys typically refers to a specific integration or functionality that allows users to work with Abaqus models or data within the Ansys software ecosystem. Abaqus is a well-known software suite for finite element analysis (FEA) and is primarily developed by Dassault Systèmes, while Ansys is another leading provider of FEA tools and simulation software.
As of my last knowledge update in October 2023,