Open Source Mac Code Editors - Page 3
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Code Editors for Mac
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SLOC
simple tool to count SLOC (source lines of code)
sloc is a simple, fast tool for counting lines of code that’s designed to be used from both the command line and Node.js scripts. It tallies physical lines, source lines, comment lines, and blank lines, giving you a quick snapshot of code size across files or entire directories. The utility is language-aware through lightweight detectors and patterns, so it can ignore comments correctly and avoid counting generated or minified files if you configure it to. Output can be human-readable for quick checks or machine-readable (like JSON) for CI pipelines that track repository growth over time. It supports typical developer conveniences such as glob patterns, file/directory ignores, and sensible defaults so you can drop it into existing workflows without fuss. Teams often wire sloc into build steps to watch trends, compare modules, or enforce thresholds before merging changes, making it a handy maintenance metric rather than a vanity number. -
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Ace Editor
Ace (Ajax.org Cloud9 Editor)
Ace is an embeddable code editor written in JavaScript. It matches the features and performance of native editors such as Sublime, Vim and TextMate. It can be easily embedded in any web page and JavaScript application. Ace is maintained as the primary editor for Cloud9 IDE and is the successor of the Mozilla Skywriter (Bespin) project. -
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Atom Beautify
Universal code formatting plugin
atom‑beautify is a universal code formatting plugin for the Atom text editor, offering support for numerous languages and formatter engines to clean or prettify source code. Many users are experiencing issues when installing third-party beautifiers (e.g., Uncrustify, PHP-CS-Fixer, and many more). A possible solution is a "cloud" service that provides remote access to these beautifiers. Atom-Beautify would then communicate with these services, allowing for zero-installation beautification. Some of the supported beautifiers are developed for Node.js and are automatically installed when Atom-Beautify is installed. However, other beautifiers are command-line interface (CLI) applications and require you to manually install them. -
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Copybara
Copybara: A tool for transforming and moving code between repositories
Copybara is an open source code transformation and migration tool developed by Google for synchronizing and managing source code across multiple repositories. It allows developers to transform, filter, and move code between repositories while maintaining a consistent source of truth. Copybara is particularly useful in workflows where projects maintain both confidential (internal) and public (open source) repositories, enabling controlled synchronization and contribution management between them. The tool supports advanced transformations—such as file relocation, content replacement, and metadata adjustments—defined declaratively in configuration files. It operates in a stateless manner, storing synchronization state within commit metadata to ensure reproducibility and collaboration among multiple users. Copybara currently supports Git repositories (with experimental Mercurial support) and can be integrated with CI/CD systems or run manually. -
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OpenAI Sublime Text Plugin
First class Sublime Text AI assistant with gpt-5, Opus 4.6, Gemini 3
OpenAI Sublime Text is a full-featured AI assistant plugin designed to bring advanced language model capabilities into the Sublime Text editor with a deeply integrated user experience. It supports a wide range of providers, including OpenAI, Anthropic, Google Gemini, and local backends like Ollama or llama.cpp, making it highly flexible for different deployment scenarios. The plugin offers both chat-based interaction and inline assistance through “phantoms,” which display non-intrusive responses directly within the editor view. It allows users to send selected code, entire files, or diagnostic outputs as context, enabling more precise and relevant responses. The system includes project-specific chat histories and assistant configurations, helping users maintain context across different development tasks. It also supports streaming responses, proxy configuration, and detailed status indicators such as token usage and active model information. -
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NetPad
A cross-platform C# editor and playground
A cross-platform C# editor and playground. NetPad is a C# playground that lets you run C# code instantly, without the hassle of creating and managing projects. Open NetPad, start coding, hit Run, and see your output immediately. It's that simple. Quickly prototype and test code snippets before incorporating them into your projects. Visualize data interactively for better insights and analysis. Query databases using LINQ or SQL effortlessly. Experiment with new C# features or start learning C# in an intuitive and accessible environment. Create and save your own utility or administration scripts for repeated use. -
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Sandpack
A component toolkit for creating live-running code editing experiences
Sandpack is a component toolkit for creating your own live running code editing experience powered by CodeSandbox. Sandpack uses CodeMirror under the hood, giving you all the basic capabilities of a code editor and syntax highlight. However, if you want to use your own editor framework, you can add that as a component too! Sandpack embeds the browser bundler that powers CodeSandbox and takes advantage of features like npm dependency support, hot module reloading, error overlaying, and caching. With Sandpack, you're always one click away from opening your code snippet in CodeSandbox. This way, you can easily share bug reports or examples behind a unique URL. Set the template prop to get started with Sandpack in a few lines of code. Each template contains all the files and dependencies needed to start a project right away. Tweak the UI to your liking using the options prop. Quickly toggle the appearance of built-in components. -
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tke
Advanced programmer's code editor written in Tcl/Tk
A modern and advanced programmer's code editor written in Tcl/Tk. -
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** We moved ** Website: http://ecoder.info/ Github: https://github.com/Ecoder/Core Google Group (support): https://groups.google.com/d/forum/ecoder-support
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Ring
Simple and flexible programming language for applications development
The Ring is a practical general-purpose multi-paradigm language. The supported programming paradigms are imperative, procedural, object-oriented, declarative using nested structures, functional, meta programming and natural programming. The language is portable (MS-DOS, Windows, Linux, macOS, Android, WebAssembly, Microcontrollers, etc.) and can be used to create Console, GUI, Web, Games and Mobile applications. The language is designed to be simple, small and flexible. Ring is distributed as a Free-Open Source project under the MIT License. -
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CodeCursor
An extension for using Cursor in Visual Studio Code
Cursor is an AI code editor based on OpenAI GPT models. You can write, edit and chat about your code with it. At this time, Cursor is only provided as a dedicated app, and the team currently has no plans to develop extensions for other editors or IDEs. -
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CodeFlask
A micro code-editor for awesome web pages
A micro code-editor for awesome web pages. This API is simply a proxy to add a new language to Prism itself (the code highlighter). The options parameter must be the same accepted in Prism. By default, CodeFlask comes with a simple theme made from scratch called CodeNoon. You can easily override this theme with your own by writing your own CSS and adding it to your project. If that's the case, you should also disable CodeNoon with the defaultTheme option. -
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Ct.js
Ct.js is a desktop game engine that makes learning programming fun
ct.js makes learning programming fun and game development easy by its visual tools, good docs and flexible, modular library. It is free, open-source, and is loved by hobbyists, professionals, teachers, and their students. Bad tools hinder your performance. Ct.js is designed to be like a brush with which you create games, not to be an enemy you will fight with. ct.js bundles come with offline docs, tutorials, and editable examples and demos. The code editor highlights errors and provides documentation right while writing your code. ct.js is based on Pixi.js, works on WebGL and provides great performance in browsers and desktop environments. Modules add new powers, and when ct.js is not enough, you can add any JS code or library. A small stylized adventure with AI-powered sea battles, violent environment, and little puzzle sections. Join the voyage to save a colony from a deadly disease! -
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GistPad
VS Code extension for managing and sharing code snippets, and notes
GistPad is a Visual Studio Code extension that allows you to edit GitHub Gists and repositories from the comfort of your favorite editor. You can open, create, delete, fork and star gists and repositories, and then seamlessly begin editing files as if they were local, without ever cloning, pushing or pulling anything. It's like your very own developer library for building and referencing code snippets, commonly used config/scripts, programming-related notes, knowledge bases, and interactive samples. -
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Livebook
Interactive and collaborative code notebooks for Elixir
Livebook is a web application for writing interactive and collaborative code notebooks. Write notebooks in Livebook then securely deploy and share them with your team and company with Livebook Hub/Enterprise. Code notebooks with Markdown support and Code cells where Elixir code is evaluated on demand. Rich code editor through Monaco: with support for autocompletion, inline documentation, code formatting, etc. Interactive results via Kino: display Vega-Lite charts, tables, maps, and more. Automation: use Smart cells to perform high-level tasks and write notebooks faster than ever. Query databases, plot charts, build maps, and more directly from Livebook's UI. Reproducible: Livebook ensures your code runs in a predictable order, all the way down to package management. It also tracks your notebook state, annotating which parts are stale. Collaboration: multiple users can work on the same notebook at once, no additional setup is required. -
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Obsidian Local GPT
Local Ollama and OpenAI-like GPT's assistance for maximum privacy
Obsidian Local GPT is a plugin that embeds AI assistance directly into the Obsidian knowledge management environment while prioritizing privacy and local execution. It supports both local models through Ollama and OpenAI-compatible APIs, allowing users to choose between fully offline workflows or hybrid setups. The plugin introduces an “Action Palette” system that enables users to run predefined or custom AI-powered actions on selected text, notes, or entire documents. It integrates deeply with Obsidian’s structure by pulling context from backlinks, linked notes, and even external files like PDFs to enhance responses. The system also supports multimodal capabilities, including image analysis when paired with compatible models. Users can create reusable prompts, install community-provided actions, and manage workflows directly inside their note-taking environment. -
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Spacemacs
A community-driven Emacs distribution
The best editor is neither Emacs nor Vim, it's Emacs *and* Vim, courtesy of Spacemacs! Spacemacs is an extension of the popular text editor Emacs, that offers a whole new way of experiencing Emacs. It is a community-driven Emacs distribution that focuses on ergonomics, mnemonics and consistency. Using it comes naturally to both Emacs and Vim users. In fact, you could even combine the two editing styles. Enabling you to switch between input styles makes Spacemacs a great choice for pair-programming. Spacemacs features a beautiful GUI and exceptional ergonomics, with all the key bindings easily accessible simply by pressing the space bar or alt-m. Spacemacs also comes with hundreds of curated, ready-to-use packages that are well organised in configuration layers. -
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SuperTab
Perform all your vim insert mode completions with Tab
supertab lets you drive completion with the Tab key instead of the default Ctrl-N/Ctrl-P, making insert-mode completion feel more natural. It can cycle through completion items and optionally fall back to indentation or other behaviors when no completion is available. The plugin plays nicely with omnifunc and user-defined completion sources, so language-specific engines or LSP-backed completions slot in seamlessly. Works with omnifunc and external completion sources or frameworks. You can configure direction, cycling, and how Tab behaves at line starts or after whitespace. It is intentionally small and focused, providing a thin layer over Vim’s completion to streamline everyday typing. Lightweight approach that keeps Vim’s native completion model. For many users, it becomes a muscle-memory improvement that speeds up coding with minimal configuration. -
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Tabular
Vim script for text filtering and alignment
Tabular is a Vim plugin for aligning text into neat columns using pattern-driven rules. Instead of manually spacing content, you define an alignment target—such as : in dictionaries, = in assignments, or | in Markdown tables—and the plugin rearranges whitespace to produce straight columns. It supports regular expressions, so you can craft smart alignment that respects context or ignores edge cases. The workflow fits naturally into Vim: you visually select lines (or operate on a motion), run a command, and instantly get well-formatted blocks. Tabular is particularly helpful for Markdown tables, JSON-like configs, and code where lining up items improves scannability. By turning alignment into a repeatable operation, it reduces tedium and enforces consistent formatting across a project. -
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codi.vim
The interactive scratchpad for hackers
codi.vim is an interactive scratchpad and REPL-like playground inside Vim/Neovim that evaluates code as you type. It creates a live buffer where inputs on one side produce continuously updated outputs on the other, helping you prototype snippets and explore APIs quickly. The plugin supports multiple languages by leveraging system interpreters or backends and displays results inline without switching context. It focuses on minimal setup so you can open a buffer, set a filetype, and start experimenting immediately. Because results update incrementally, it is useful for learning, debugging, or documenting small examples. It turns Vim into a lightweight computational notebook while keeping the modal editing experience intact. -
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interactive-examples
Home of the MDN live code editor interactive examples
Home of the MDN interactive code examples. The dynamically generated pages, their dependencies, and assets are generated to the prod branch. -
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limelight.vim
All the world's indeed a stage and we are merely players
limelight.vim is a minimalist plugin that enhances focus by subtly dimming all but the paragraph or block surrounding the cursor. It’s designed to complement distraction-free modes such as goyo.vim, helping writers and coders keep attention on their current context. The plugin adjusts highlight groups dynamically so the active text remains clear while surrounding text fades into a low-contrast tone. It supports fine-grained control over opacity and integrates with any colorscheme without breaking syntax highlighting. Because it’s lightweight and entirely written in Vimscript, it runs smoothly even on large files. The visual effect creates a calm, spotlight-like environment that reduces visual clutter while editing prose, code comments, or long documentation files. -
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rust.vim
Vim configuration for Rust
rust.vim is the official Vim plugin from the Rust Lang Foundation team that adds support for Rust files in Vim and Neovim. It provides file-detection (so .rs files are recognised), syntax highlighting tuned for Rust’s syntax and macros, and supports formatting via rustfmt and other language-specific tooling. The plugin also integrates with other Vim tools and linters, helping you build a full Rust-editing workflow in Vim. Because Rust’s macro system and language features are more complex than many languages, rust.vim handles special tokens and highlights accordingly. Though it doesn’t itself provide full language-server (LSP) capabilities, it lays the foundation so you can plug in LSP or other completion/diagnostic plugins. Many Rust users say that rust.vim is a reliable baseline for making Vim feel like a competent Rust editor rather than a bare text editor. -
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unimpaired.vim
unimpaired.vim: Pairs of handy bracket mappings
vim-unimpaired provides a rich set of bracket mappings that make navigation and editing faster with consistent, memorable keys. It standardizes “previous/next” operations across lists like buffers, quickfix, location lists, and tags so your muscle memory stays the same. The plugin also adds convenience motions for moving between version-control conflict markers when resolving merges. It includes utilities for inserting blank lines above or below without leaving normal mode, improving flow for structural edits. Paste mappings are adjusted so linewise pastes respect indentation and placement. The goal is to give you a toolbox of tiny, orthogonal improvements that feel native to Vim rather than an intrusive remapping of fundamentals. -
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Open source java WYSIWYG editor and source code generator, loosely based on the ease of use offered by Visual Basic 6. Can edit the source with a basic syntax highlighter. Still in the beta stages. Please feel free to check out the source and offer a
