TextPad

vs

gedit

TextWrangler is an all-purpose text and code editor for macOS. TextWrangler is now BBEdit.

Notepad2 was designed to be a free and open Notepad alternative, the default text editor application of Windows. Notepad2 is released under the BSD license and is small and fast text editor that provides syntax highlighting. With Notepad2 you can enjoy the same Notepad application you come to love, but for free, with syntax highlighting.

With RubyMine you can produce high-quality code more efficiently, thanks to first-class support for Ruby and Rails, JavaScript and CoffeeScript, ERB and HAML, CSS, Sass and Less, and more. RubyMine is IDE specifically designed for the programming language Ruby. It allows developers to take advantage of the language specific-aware syntax & error highlighting, code formatting, code completion, and quick documentation.

GNOME Builder is an integrated development environment for the GNOME desktop environment. The IDE is built from the ground up to aid developers in building GNOME-base applications. GNOME Builder supports a vareity of programming languages including C/C++, Python, Rust, and Vala, as well as ctags integration for unsupported languages. The IDE provides functionallity for searching for files, classes, and functions with lightning fast fuzzy search, source code maps, side-by-side tiling, git intigration, application profiling using Sysprof, inline documentation and much more.

MonoDevelop is a free and open-source IDE (Integrated Development Environment) for macOS, Linux and Windows. The software primary focus is to provide and IDE specifically for Mono and .NET frameworks. MonoDevelop features intellisense automatic code completion, source control, a graphical user interface.

A free and open-source IDE for macOS, Linux, and Windows developed by GitHub Inc. The application is build on the Electron framework and provides a wide eco-system of add-ons that can be used to extend the IDE further. Atom is loved by developers across the globe.