Welcome to TeXmacs4Win homepage. This project is a native Windows port of GNU TeXmacs - a graphical WYSIWYG TeX-compatible scientific editor. Unlike other TeX Front-ends, TeXmacs provides a visual interface for interactive document editing (similarly to MS Office/OpenOffice), rather than focusing on source-level TeX document editing. The TeXmacs4Win port does not depend on Cygwin and comes with an automatic installer.
Although TeXmacs4Win supports basic Windows shortcuts, MS Office/MathType users can find some of specific shortcuts unusual. Fortunately, it is possible to fully customize all TeXmacs keyboard shortcuts by editing the .scm files contained in its directory. See this article for more details.
Here is a sample TeXmacs4Win window:

TeXmacs4Win is licensed under GPLv3.
You can download the latest version from the SourceForge download page.
Feel free to ask questions regarding BazisLib on the SysProgs.org forum.