Syntaxic is described as 'Cross-platform, keyboard-friendly text editor' and is an app in the Development category. There are more than 50 alternatives to Syntaxic for a variety of platforms, including Windows, Linux, Mac, BSD and Chrome OS. The best alternative is Notepad++, which is both free and Open Source. Other great apps like Syntaxic are Atom (Free, Open Source), Sublime Text (Free Personal), Vim (Free, Open Source) and Eclipse (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.
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.