Programmer's Notepad is described as 'Notepad more focused on developing than just scribble down notes' and is a popular app in the Development category. There are more than 100 alternatives to Programmer's Notepad for a variety of platforms, including Windows, Mac, Linux, BSD and PortableApps.com. The best alternative is Notepad++, which is both free and Open Source. Other great apps like Programmer's Notepad are Vim (Free, Open Source), Eclipse (Free, Open Source), Geany (Free, Open Source) and VSCodium (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.
Neovim is a project that seeks to aggressively refactor Vim in order to: Simplify maintenance and encourage contributions. Split the work between multiple developers. Enable the implementation of new/modern user interfaces without any modifications to the core source.
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.