Open Source Code Editors - Page 5
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Code Editors
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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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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
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Notepad++ Portable Edition is the Notepad++ source code editor and notepad replacement packaged with an OTBSoft Launcher as a portable app, so you can take it with you on a USB drive, iPod, etc and use it on any computer.
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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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Activate Power Mode
Atom package - Activate POWER MODE to write your code in style
Activate Power Mode is an Atom plugin that adds playful visual and audio effects—particle trails, screen shaking, combo counters—when coding at speed. Inspired by Code in the Dark’s “power mode”, it enhances typing flow, with customizable thresholds and combo modes to moderate effect frequency. -
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AstroNvim
AstroNvim is an aesthetic and feature-rich neovim config
AstroNvim is an aesthetic and feature-rich neovim config that is extensible and easy to use with a great set of plugins. AstroNvim is provided as a plugin that can be installed with the lazy.nvim plugin manager and then used to import all of the plugin configurations that AstroNvim provides. To quickly get started it is recommended to start with the official AstroNvim Template which provides a great starting point for a new AstroNvim based configuration. We found other Neovim configurations either being powerful out of the box but hard to customize, or easy to customize but minimal out of the box functionality. AstroNvim aims to find the middle ground with a great out of the box experience while empowering the user to make tweaks where they want. -
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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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CodeJar
An embeddable code editor for the browser
CodeJar, an embeddable code editor for the browser. -
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Fast Binary Encoding (FBE)
Fast Binary Encoding is fast and universal serialization solution
Fast Binary Encoding is ultra fast and universal serialization solution for C++, C#, Go, Java, JavaScript, Kotlin, Python, Ruby, and Swift. Fast Binary Encoding allows to description of any domain models, business objects, complex data structures, client/server requests & responses and generate native code for different programming languages and platforms. -
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JTRANSC
Bytecode to source converting Java & Kotlin code into JavaScript, C++
JTransc (Java Trans Compiler) is an AOT (ahead-of-time compiler) that compiles .class and .jar files into a target programming language / executable bundling all the required dependencies in a single file or folder, without requiring a jitter or an external runtime. There are a lot of technologies in order to convert languages into other ones. For example, converting Java into JavaScript. Or KotlinJS Kotlin backend that already targets JavaScript. -
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Kakoune
mawww's experiment for a better code editor
Multiple selections are the central way of interacting in Kakoune, with powerful handling primitives (regex matches, filtering, splitting, aligning, text objects etc). Kakoune implements several tools to help editing/writing text: contextual help, as-you-type completion, syntax highlighting for several programming languages. Text can be selected and modified at will in multiple ways, thanks to several primitives: selection rotation, case manipulation, indentation leveling. Users can extend the features of Kakoune or customize them to their liking with macros or hooks. With Kakoune, you can collaboratively edit the same file: all new windows created by the editor are clients, and can simultaneously modify the content of a file. As such, windows are fully under the control of your X11 window manager or can be managed in a single terminal through Kakoune's tmux support. -
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Lamdu
Lamdu, towards the next generation IDE
Lamdu is a programming language designed to be useful and delightful. This project aims to create a next-generation, live programming environment that radically improves the programming experience. A predictable user interface with rich code completions, without the possibility of syntax errors. Continuous, automatic code formatting without the user needing to deal with formatting. -
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NullAway
A tool to help eliminate NullPointerExceptions (NPEs) in your code
NullAway is a tool to help eliminate NullPointerExceptions (NPEs) in your Java code. To use NullAway, first add @Nullable annotations in your code wherever a field, method parameter, or return value may be null. Given these annotations, NullAway performs a series of type-based, local checks to ensure that any pointer that gets dereferenced in your code cannot be null. NullAway is similar to the type-based nullability checking in the Kotlin and Swift languages, and the Checker Framework and Eradicate null checkers for Java. NullAway is fast. It is built as a plugin to Error Prone and can run on every single build of your code. In our measurements, the build-time overhead of running NullAway is usually less than 10%. NullAway is also practical: it does not prevent all possible NPEs in your code, but it catches most of the NPEs we have observed in production while imposing a reasonable annotation burden, giving a great "bang for your buck." -
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OEditorX
Online EditorX
OEditorx is an open-source project - A user-friendly online editor tailored for HTML, CSS, and JavaScript. This editor is designed to empower you to write and immediately test your front code. It allows you to experiment with various styles, layouts, and interactive elements in real-time, all through an intuitive interface. Whether you are in the process of creating a website, prototyping an application, or simply exploring the potential of these technologies, our editor serves as the ideal tool to bring your creative ideas to fruition. -
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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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Rustpad
Efficient and minimal collaborative code editor, self-hosted
Rustpad is a minimal open-source collaborative code editor for real-time writing in the browser. It uses operational transformation so multiple users can edit the same document at the same time without overwriting each other. The server is written in Rust, while the front end uses TypeScript, React, WebAssembly, and the Monaco editor. Rustpad is designed to be self-hosted and can run without a database by keeping documents in memory. It also supports optional SQLite persistence for retaining document contents across restarts. The project is especially useful for lightweight pair programming, collaborative note-taking, interviews, teaching, and temporary shared editing sessions. -
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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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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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rails.vim
rails.vim: Ruby on Rails power tools
vim-rails is a powerful plugin by Tim Pope designed to enhance the development experience of Ruby on Rails applications inside Vim. It understands the Rails directory structure (app, config, db, lib, etc) and allows you to quickly jump between corresponding files (for example from a model to its test, or a view to its controller) via convenient mappings. It also augments Vim’s built-in file navigation (for example via gf) so that links in embedded Ruby templates or route definitions can open the correct destination. In addition to navigation, the plugin provides commands to generate scaffolding, migrate the database, switch environments, and so on, making many common Rails tasks accessible without leaving the editor. The plugin emphasizes staying within Vim and minimizing context-switching, which boosts productivity for Rails developers. -
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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.
