Showing 2207 open source projects for "text editor"

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  • 1
    Markdig

    Markdig

    A fast, powerful, CommonMark compliant, extensible Markdown processor

    A fast, powerful, CommonMark compliant, extensible Markdown processor for .NET. Very fast parser and HTML renderer (no-regexp), very lightweight in terms of GC pressure. Abstract Syntax Tree with precise source code location for syntax tree, useful when building a Markdown editor. Check out MarkdownEditor for Visual Studio powered by Markdig! Even the core Markdown/CommonMark parsing is pluggable, so it allows to disable built-in Markdown/Commonmark parsing (e.g Disable HTML parsing) or...
    Downloads: 3 This Week
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  • 2
    Querybook

    Querybook

    Big Data Querying UI, combining collocated table metadata

    Querybook is Pinterest’s open-source big data IDE via a notebook interface. Querybook’s core focus is to make composing queries, creating analyses, and collaborating with others as simple as possible. Organize rich text, queries, and charts into a notebook to easily document your analyses. Work collaboratively with others in a DataDoc and get real-time updates. The Query Editor is aware of your tables and their columns, as such it provides autocompletion, syntax highlighting, and the ability to hover or click on a table to view its information. No need to leave Querybook to create charts to quickly visualize your results. ...
    Downloads: 3 This Week
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  • 3
    App Store Screenshot Generator

    App Store Screenshot Generator

    Create screenshots for the iOS App Store

    AppScreen is a free and open-source utility designed to help developers and designers produce polished App Store screenshots for iOS apps without needing expensive graphic design software or manual layout work. It runs entirely in a browser or local environment and includes intuitive controls for backgrounds, text overlays, and device mockups, letting users compose compelling marketing visuals that meet Apple’s official size guidelines. Users can toggle between multiple device models and...
    Downloads: 1 This Week
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  • 4
    PDFCraft

    PDFCraft

    PDFCraft is a free, privacy-focused PDF toolkit

    PDFCraft is an extensible toolkit for creating, editing, and transforming PDF documents with both a graphical interface and a scripting API, making it useful for users ranging from casual editors to automated document processors. At its core, the project provides a clean, modern UI where you can rearrange pages, annotate text, insert images, fill forms, and export to multiple formats, all without needing a heavyweight commercial PDF suite. But beyond manual editing, it also offers a...
    Downloads: 18 This Week
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  • 5
    svelte-jsoneditor

    svelte-jsoneditor

    Web-based tool to view, edit, format, repair, query, & transform JSON

    ...The library is written with Svelte, but can be used in plain JavaScript too, and in any framework (SolidJS, React, Vue, Angular, etc). View and edit JSON, has a low-level text editor and high-level tree view and table view. Format (beautify) and compact JSON. Sort, query, filter, and transform JSON. JSON schema validation and pluggable custom validation. Color highlighting, undo/redo, search and replace. Utilities like a color picker and timestamp tag. Handles large JSON documents up to 512 MB.
    Downloads: 0 This Week
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  • 6
    crystalline

    crystalline

    A Language Server Protocol implementation for Crystal

    ...A whole document or a text selection. By clicking on a symbol with the Cmd or Ctrl key pressed (editor/platform dependent). Hovering should display (when possible) either a variable type, a function definition signature or the expanded macro.
    Downloads: 0 This Week
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  • 7
    CustomCSSforFx

    CustomCSSforFx

    Custom CSS tweaks for Firefox

    ...Keep in mind CSS code can not create entirely new items, buttons, or toolbars. It only can modify already present UI items. Edit userChrome.css and userContent.css with any text editor (Notepad++ recommended on Windows) and enable or disable any feature you like by modifying, removing, or out-commenting available import strings. Open CSS files with a text editor. Look through the code and change values the way you need. Some files contain additional instructions about how to tweak the UI for individual cases.
    Downloads: 0 This Week
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  • 8
    Mudlet

    Mudlet

    Cross-platform, open source, and super fast MUD client with scripting

    Play immersive, multiplayer, pure-text games on Mudlet. Performance defined Mudlet from its birth. The custom text display and the Lua-powered scripting system will handle the biggest raids without issues. Mudlet’s entire user interface is designed to be modded – from the space within the window to the look and feel of the client itself. Make yourself a beautiful portal to your text world. Mudlet is completely free to download, modify, and extend. Build on top of a powerful foundation and...
    Downloads: 4 This Week
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  • 9
    Remarkable for Linux

    Remarkable for Linux

    The Markdown Editor for Linux

    With Live Preview you can see your changes as you make them. There is no need to export first to check your syntax. This is accompanied by synchronized scrolling. Remarkable has Github Flavoured Markdown. This has a simple, easy-to-learn syntax with features like checklists, highlighting, links, images and more. Remarkable allows you to export your files to PDF and HTML from within the app. The HTML code is even prettified and PDFs have a TOC. You can style your markdown documents however...
    Downloads: 3 This Week
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  • 10
    WriteFreely

    WriteFreely

    A clean, Markdown-based publishing platform made for writers

    An open source platform for building a writing space on the web. Our fast, auto-saving editor is all you need to quickly get your thoughts down and published to your blog. WriteFreely sets your ideas and your server's resources free. Just run the binary to start your site up. Host your own community of writers. Interact with the decentralized social web via ActivityPub. WriteFreely has spent the past six years reliably powering more than 150,000 blogs on Write.as. WriteFreely is built around...
    Downloads: 6 This Week
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  • 11
    TeXstudio - A LaTeX Editor

    TeXstudio - A LaTeX Editor

    An integrated writing environment for creating LaTeX documents

    NOTE: Active development has moved to https://github.com/texstudio-org/texstudio Please post issues and feature requests there. TeXstudio is a fully featured LaTeX editor. Our goal is to make writing LaTeX documents as easy and comfortable as possible. Some of the outstanding features of TeXstudio are an integrated pdf viewer with (almost) word-level synchronization, live inline preview, advanced syntax-highlighting, live checking of references, citations, latex commands, spelling and...
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    Downloads: 504 This Week
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  • 12
    Collabora Online

    Collabora Online

    Collabora Online is a collaborative online office suite

    Collabora Online is a powerful online office suite that you can integrate into your own infrastructure or access via one of our trusted hosting Partners. Your digital sovereignty is our priority. We provide you with all the tools to keep your data secure, without compromising on features. Collabora Online’s text document editor provides a true WYSIWYG editing experience, making visualizing your document layout incredibly easy. Open any document, add comments and track changes from anywhere, with anyone. Format and style your pages with endless options. From simple spreadsheets and calculations to advanced formulas, Calc can do it all. Create giant spreadsheets with up to 16k columns, and add charts, sparklines, and hyperlinks. ...
    Downloads: 4 This Week
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  • 13
    Voicebox

    Voicebox

    The open-source voice synthesis studio powered by Qwen3-TTS

    Voicebox is a local-first voice synthesis studio that aims to bring professional, DAW-like voice generation workflows to a desktop app while keeping models and voice data entirely on your machine. It positions itself as an open-source alternative to cloud voice platforms by emphasizing privacy, offline use, and freedom from subscriptions or usage caps. The tool supports downloading voice models, cloning voices from short audio samples, and generating speech locally, then organizing the...
    Downloads: 0 This Week
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  • 14
    RailsPanel

    RailsPanel

    Chrome extension for Rails development

    ...Provides insight to db/rendering/total times, parameter list, rendered views and more. Provides insight to db/rendering/total times, parameter list, rendered views, text editor integration and more.
    Downloads: 0 This Week
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  • 15
    Cloud Commander

    Cloud Commander

    Cloud Commander file manager for the web with console and editor

    Cloud Commander is a file manager for the web. It includes a command-line console and a text editor. Cloud Commander helps you manage your server and work with files, directories and programs in a web browser from any computer, mobile or tablet. Can be used local or remotely. Adapts to screen size. 3 built-in editors with support of syntax highlighting: Dword, Edward and Deepword. Console with support of the default OS command line.
    Downloads: 3 This Week
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  • 16
    PhotoEditor SDK

    PhotoEditor SDK

    PhotoEditor SDK: A fully customizable photo editor for your app

    The PESDK Android Demo is an example project showcasing how to integrate the PhotoEditor SDK (PESDK) into Android applications. PESDK is a powerful and customizable mobile photo editing framework developed by IMG.LY, enabling developers to add professional-grade photo editing capabilities to their apps. The demo illustrates features such as cropping, filtering, stickers, text overlays, adjustments, and more—all powered by a clean and user-friendly interface. It supports deep customization,...
    Downloads: 2 This Week
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  • 17
    IdeaVim

    IdeaVim

    IdeaVim – A Vim engine for JetBrains IDEs

    IdeaVim is an open-source plugin that brings the power and modal editing experience of the Vim text editor into JetBrains IDEs such as IntelliJ, PyCharm, CLion, WebStorm, and others, letting developers work with familiar Vim commands while still benefiting from full IDE features and tooling. It integrates deeply with the JetBrains platform to support Vim’s normal, insert, visual, and command-line modes, along with motions, search and replace, marks, registers, and many Ex commands, giving Vim users a highly productive editing experience inside modern IDE environments. ...
    Downloads: 0 This Week
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  • 18
    JE is a fast, feature rich and powerful programming editor written in Java. It has all features a modern editor must have, plus some more. JE can also be used as a editor panel in other Java applications or applets. For installation, just install Java, download the je.jar file, and start the program with "java -jar java.jar" on a command line. For more easy use, create a batch file on your system containing something like "javaw -jar java.jar %1" (Windows syntax shown). The editor will...
    Downloads: 13 This Week
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  • 19
    MiaoYan

    MiaoYan

    Lightweight Markdown app to help you write great sentences

    MiaoYan is a lightweight, native Markdown note-taking app for macOS, built to give programmers and writers a fast, distraction-free environment for text. It is fully local-first, meaning your notes live as plain Markdown files on your machine rather than in a proprietary cloud, which appeals to privacy-conscious users. The app focuses on a minimalist three-column layout (folders, note list, editor) with syntax highlighting, dark mode, and typography tuned for Chinese and English writing. ...
    Downloads: 1 This Week
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  • 20

    joy of text

    Editor with scripting language, security features & system interfaces.

    Jot was developed general purpose editor for large CAD files. It's command-driven UI requires no mode switching and hence requires fewer keystrokes to get a typical job done. It is particularly useful for checking and cross-referencing between several source, intermediate and output files - a common requirement for CAD work. But jot's usefulness doesn't stop there. It's sophisticated search features can, for example, be used for interactive data mining or automating the extraction of numerical and textual data and reports from arrays of large text files. ...
    Downloads: 1 This Week
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  • 21
    Ungoogled Chromium

    Ungoogled Chromium

    A lightweight approach to removing Google web service dependency

    In descending order of significance (i.e. most important objective first), ungoogled-chromium is Google Chromium, sans dependency on Google web services, ungoogled-chromium retains the default Chromium experience as closely as possible. Unlike other Chromium forks that have their own visions of a web browser, ungoogled-chromium is essentially a drop-in replacement for Chromium. ungoogled-chromium features tweaks to enhance privacy, control, and transparency. However, almost all of these...
    Downloads: 28 This Week
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  • 22
    Puter

    Puter

    The Internet OS! Free, Open-Source, and Self-Hostable

    Puter is a browser-based personal operating system and file explorer built entirely with web technologies. It mimics the experience of a traditional desktop OS, allowing users to manage files, launch apps, and interact with a graphical interface—all within a web browser. The project is designed to be both functional and nostalgic, combining the aesthetic of retro operating systems with modern development tools like React and Tailwind CSS. Puter offers a self-hostable, customizable...
    Downloads: 16 This Week
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  • 23
    QMK

    QMK

    Keyboard firmware for Atmel AVR and ARM controllers

    QMK (Quantum Mechanical Keyboard) is an open source community centered around developing computer input devices. The community encompasses all sorts of input devices, such as keyboards, mice, and MIDI devices. This is a keyboard firmware based on the tmk_keyboard firmware with some useful features for Atmel AVR and ARM controllers, and more specifically, the OLKB product line, the ErgoDox EZ keyboard, and the Clueboard product line. Keyboards powered by QMK are Planck, Preonic, ErgoDox EZ,...
    Downloads: 10 This Week
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  • 24
    Blockly Games

    Blockly Games

    Games for tomorrow's programmers

    Blockly Games is a collection of educational games that teach core programming concepts using Google’s Blockly visual blocks. Each game introduces ideas like sequencing, loops, conditionals, functions, and variables through playful puzzles that gradually increase in difficulty. Under the hood, the block programs compile to JavaScript, giving learners a bridge from drag-and-drop logic to real code. The activities are self-contained and browser-based, requiring no installation, which makes...
    Downloads: 15 This Week
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  • 25
    scalafmt

    scalafmt

    Code formatter for Scala

    ...Spend more time discussing important issues in code review and less time on code style. Scalafmt formats code so that it looks consistent between people on your team. Run scalafmt from your editor, build tool or terminal. Scalafmt has integrations with IntelliJ, sbt, Maven, Gradle and Mill. Choose the scalafmt formatter and IntelliJ's Reformat Code action will then use Scalafmt when formatting files. Scalafmt is primarily designed to operate on entire text files—formatting selected ranges of code may produce undesirable results. ...
    Downloads: 1 This Week
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