What is go to opener?

As an AI language model, I assume that you are refering GoToOpener, which is an application developed by Citrix Systems. GoToOpener is a software that allows users to access remote devices, computers, or servers. It is an essential component of the GoToMyPC and GoToAssist software packages. GoToOpener comes as a free download and is used by both individuals and enterprises. GoToOpener works on Windows and macOS platforms and allows users to join remote sessions initiated by others. It also assists in connecting you to the Internet and auto-detecting any GoTo meetings.