Project IDX has been discontinued. Similar sites and apps include Notepad++, which is free and open source. Other options are Visual Studio Code, Sublime Text, VSCodium and Vim. You're spoiled for choice with Code Editors like Project IDX: we list more than 50 alternatives for Mac, Windows, Linux, Android and Chrome OS.
Extensible text editor with UTF-8 support, syntax highlighting for several programming and markup languages, remote editing, file reverting, print preview, clipboard operations, powerful search, customizable fonts and colors, line numbering, and plugin support.
United States
IntelliJ IDEA is the JetBrains IDE for pro development in Java and Kotlin. Built for your comfort, it unlocks productivity, ensures quality code, supports cutting-edge tech, and protects your privacy.
Czechia
EU
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:
United States
Micro is a terminal-based text editor that aims to be easy to use and intuitive, while also taking advantage of the full capabilities of modern terminals.
United States
Replit is a collaborative cloud development environment offering in-browser IDE features like AI assistance, real-time collaboration, Git support, hosting, deployment, syntax highlighting, plugin extensibility, ad-free UI, dark mode, and live code sharing.
United States
A Community-led Hyper-Hackable Text Editor, built on Electron. and based on everything we love about our favorite editors.
United States
Brackets is an open-source editor for web design and development built on top of web technologies such as HTML, CSS and JavaScript.
United States
Windsurf Editor is an IDE merging AI and developers for lockstep collaboration with Cascade capabilities, boosting speed and contextual coding through copilot and agent-like systems across Mac, Windows, and Linux.
United States
Lite XL is a lightweight text editor written mostly in Lua — it aims to provide something practical, pretty, small and fast, implemented as simply as possible; easy to modify and extend, or to use without doing either.
JetBrains WebStorm is a commercial IDE for JavaScript, CSS & HTML built on JetBrains' IntelliJ IDEA platform.
CzechiaEU
Syntax Highlighting: Colorize more than 50 pre-installed major languages like HTML, PHP, Python, Ruby or Markdown. You can also create your own settings.
Japan
