Textosaurus is described as 'Features UI: - cross-platform look & feel, - configurable toolbar - changeable icon themes and styles, - main window remembers its location and size, - hideable toolbar and statusbar, - simple interface, - movable dock sidebars: - "Output" sidebar - can' and is an app in the Development category. There are more than 25 alternatives to Textosaurus for a variety of platforms, including Windows, Linux, Mac, BSD and PortableApps.com. The best alternative is Visual Studio Code, which is free. Other great apps like Textosaurus are Notepad++ (Free, Open Source), Atom (Free, Open Source), Sublime Text (Free Personal) and Vim (Free, Open Source).
Judge0 IDE is a free and open-source online code editor that allows you to write and execute code from a rich set of languages. It's perfect for anybody who just wants to quickly write and run some code without opening a full-featured IDE on their computer.
vy is a modal editor with a very modular architecture. vy is built on top of Tkinter which is one of the most productive graphical toolkits; It permits vy to have such a great programming interface for plugins.
4coder is a minimalist, cross platform, programmable, code editing environment, catering to the needs of low level programmers. It allows you to use one work flow across Windows, Linux, and Mac (with the exception of your debugger... for now.).
Nota is a convergent text editor. Nota is easy to use, with a simple interface by default. Nota supports syntax highlighting for various languages, focus mode, annotations, configurable fonts, colors, a integrated side panel and more.
Hacker Pad is a convenient scratch pad that allows everyone, especially developer, to quickly jot down ideas and snippets. This comes from the need of my colleagues who struggle with how to quickly write down notes in a convenient way.
Text Editor Pro (formerly EditBone) is a powerful text editing tool that comes with syntax highlighting, support for over 50 languages and scripts, 22 different styles, a handy file comparison feature and support for multiple directories and search results.