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.
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.
Phoenix Code is a text editor designed to make coding as intuitive and fun as playing a video game - specially crafted for web developers, designers, and students.
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.
United States
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.
United States
ReText is a simple text editor for Markdown and reStructuredText documents with syntax highlighting and optional live preview.
TextWrangler is the powerful general purpose text editor, and Unix and server administrator’s tool.
United States
GitHub Codespaces is an instant, cloud-based development environment that uses a container to provide you with common languages, tools, and utilities for development. GitHub Codespaces is also configurable, allowing you to create a customized development environment for your...
United States
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.
United States
Vim inspired text editor with support for multiple selections and scores of other "out of the box" features.
France
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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...
United States
Textastic is an advanced code editor for iOS and macOS with support for syntax highlighting, remote file transfer, and SSH.
GermanyEU
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.
GermanyEU
