What is .GUI file extension?
.GUI file extension is a known file type. This section of easyfileopener.com tells you everything you need to know about this extension.
Project file created by Dr.Explain, a help authoring tool; contains help topics and articles written by the help documentation developer; used for publishing help manuals in Windows Help (.CHM), .PDF, and online HTML formats.
Dr.Explain projects can also maintain annotated screenshots, technical illustrations, and other useful help resources.
You can see a list of software programs here on easyfileopener.com that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.