xPad. is described as 'xPad is the ultimate notepad, TextEdit and Stickies replacement for Apple's OS X. With a simple, easy-to-use interface and powerful multi-document features, xPad will quickly become your daily text editor of choice' and is an app in the Office & Productivity category. There are more than 50 alternatives to xPad. for a variety of platforms, including Windows, Mac, Linux, BSD and Online / Web-based. The best alternative is Notepad++, which is both free and Open Source. Other great apps like xPad. are Vim (Free, Open Source), gedit (Free, Open Source), GNU nano (Free, Open Source) and GNU Emacs (Free, Open Source).
GNU nano is a small and friendly text editor. Besides basic text editing, nano offers many extra features like an interactive search and replace, go to line and column number, auto-indentation, feature toggles, internationalization support, and filename tab completion.
Pinegrow is a Mac, Windows and Linux web editor that lets you build responsive websites faster with live multi-page editing, CSS & SASS styling, CSS Grid editor and smart components for Bootstrap, Foundation and WordPress.
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).