TeXnicCenter is a feature rich integrated development environment (IDE) for developing LaTeX-documents on Microsoft Windows (Windows 9x/ME, NT/2000/XP) freely available under GPL.
WinShell is a free multilingual integrated development environment (IDE) for LaTeX and TeX. The program includes a text editor, syntax highlighting, project management, spell checking, a table wizard, BibTeX support, Unicode support, different toolbars and user configuration options. It is not a LaTeX system; an additional LaTeX package is required.
LaTeX Editor, called later LEd, is a free environment for rapid TeX and LaTeX document development.
LaTeX Editor is designed to work on Windows® 95/98/Me/NT4/2000/XP/2003 operating systems. LEd's capabilities vary according to the operating system used, e.g., Visual Styles from Windows® XP. It, however, works with almost all functionality also on Windows® 95.