PIDA is described as 'IDE (integrated development environment)' and is a Text Editor in the Development category. There are more than 25 alternatives to PIDA for a variety of platforms, including Mac, Windows, Linux, BSD and Haiku. The best alternative is Notepad++, which is both free and Open Source. Other great apps like PIDA are Sublime Text (Free Personal), Vim (Free, Open Source), Geany (Free, Open Source) and Kate (Free, Open Source).
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.
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.
GNU Emacs is an extensible, customizable text editor—and more. At its core is an interpreter for Emacs Lisp, a dialect of the Lisp programming language with extensions to support text editing. The features of GNU Emacs include:
TextMate brings Apple's approach to operating systems into the world of text editors. By bridging UNIX underpinnings and GUI, TextMate cherry-picks the best of both worlds to the benefit of expert scripters and novice users alike.