Aquamacs Emacs is not available for Windows but there are plenty of alternatives that runs on Windows with similar functionality. The best Windows alternative is Visual Studio Code, which is free. If that doesn't suit you, our users have ranked more than 100 alternatives to Aquamacs Emacs and loads of them are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to Aquamacs Emacs are Notepad++ (Free, Open Source), Atom (Free, Open Source), Sublime Text (Free Personal) and Vim (Free, Open Source).
The Kate project develops two main products: KatePart, the advanced editor component which is used in numerous KDE applications requiring a text editing component, and Kate, a MDI text editor application.
Bluefish is a powerful editor targeted towards programmers and webdesigners, with many options to write websites, scripts and programming code. Bluefish supports many programming and markup languages, and it focuses on editing dynamic and interactive websites.
CudaText is a cross-platform text editor, written in Lazarus. It starts quite fast (0.5 sec with ~30 plugins on CPU Intel Core i3 3Hz). It is extensible by Python add-ons (plugins, linters, code tree parsers, external tools).