Syntax Highlighting: Colorize more than 50 pre-installed major languages like HTML, PHP, Python, Ruby or Markdown. You can also create your own settings.




Project IDX is described as 'Entirely web-based, integrated development environment. IDX can help you build and deploy applications in various tech stacks without the tedium of setting up development environments for yourself and others on your team' and is a Code Editor in the development category. There are more than 50 alternatives to Project IDX, not only websites but also apps for a variety of platforms, including Mac, Windows, Linux, BSD and Flathub apps. The best Project IDX alternative is Notepad++, which is both free and Open Source. Other great sites and apps similar to Project IDX are Visual Studio Code, Sublime Text, VSCodium and Vim.
Syntax Highlighting: Colorize more than 50 pre-installed major languages like HTML, PHP, Python, Ruby or Markdown. You can also create your own settings.




Leafpad is a lightweight text editor that emphasizes simplicity. As development focuses on keeping weight down to a minimum, only the most essential features are implemented in the editor.


ReText is a simple text editor for Markdown and reStructuredText documents with syntax highlighting and optional live preview.


Versatile Windows editor offering lightweight, ultra-fast performance with robust support for text, code, and CSV files, AI-assisted writing, macros, Unicode, plugins, syntax highlighting, advanced search, column editing, split views, and file encoding conversion.




DevPod is infrastructure-independent and client-only, which makes it incredibly easy to get started with. Codespaces but open-source, client-only and unopinionated. Works with any infra, any programming language, any IDE, etc.




TextWrangler is the powerful general purpose text editor, and Unix and server administrator’s tool.




Textadept is a fast, minimalist, and ridiculously extensible cross-platform text editor for programmers. Written in a combination of C and Lua and relentlessly optimized for speed and minimalism over the years, Textadept is an ideal editor for programmers who want endless...



BBEdit is a professional HTML and text editor for the Macintosh. Specifically crafted in response to the needs of Web authors and software developers, this award-winning product provides an abundance of high-performance features for editing, searching, and manipulation of text.

A simple text editor for the Xfce desktop environment. Mousepad aims to be an easy-to-use and fast editor for quickly editing text files, not a development environment or an editor with a huge bunch of plugins.


Enjoy full support when running your code inside the Rust IDE, be it for testing purposes, debugging, benchmarking, profiling, or targeting different platforms.



jEdit is a mature programmer's text editor with hundreds (counting the time developing plugins) of person-years of development behind it. jEdit beats many expensive development tools for features and ease of use AND it is released as free software with full source code...



Vim inspired text editor with support for multiple selections and scores of other "out of the box" features.

