Thunderpad is described as '(formerly Textpad) is a simple, general-purpose and cross-platform text editor written in C++ using the Qt libraries. Thunderpad aims to be faster and more lightweight than most text editors, but as useful as them' and is an app in the Development category. There are more than 100 alternatives to Thunderpad for a variety of platforms, including Windows, Mac, Linux, BSD and Chrome OS. The best alternative is Visual Studio Code, which is free. Other great apps like Thunderpad are Notepad++ (Free, Open Source), Vim (Free, Open Source), Eclipse (Free, Open Source) and Geany (Free, Open Source).
VS Code is more than just a code editor, it provides the tools and extensions to compile, debug, compare, refactor, and even manage code repositories all within a highly-customised development environment.
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.
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.