FoldingText is described as 'makes you productive in easily formatted plain text. Turn your ideas into plans. Your to-dos into results. Your writing into clear, focused documents' and is an app in the Development category. There are more than 100 alternatives to FoldingText 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 FoldingText are gedit (Free, Open Source), GNU nano (Free, Open Source), WorkFlowy (Freemium) and Kate (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.
Workflowy lets you organise your brain into easily manageable lists. It also works as a single-pane outliner with inline notes. It offers one-click hoisting (zooming into branches). The online version syncs with mobile apps.
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.