Open-source alternatives to Moeditor

Cherry Markdown is a web-based Markdown editor and parsing engine that converts markup text into sanitized HTML with a real-time synchronized preview pane. It functions as a rich text interface and WYSIWYG tool, providing a system for transforming markup strings into HTML documents or portable formats. The project distinguishes itself through high-performance rendering and a flexible extensibility model. It uses virtual DOM diffing and partial rendering to maintain responsiveness in large documents, and it allows for the creation of custom parsing rules and specialized HTML components via a p

Dillinger is a browser-based Markdown HTML5 editor designed for real-time text editing and visual rendering. It functions as a cloud-synced writing tool that transforms markup syntax into live HTML previews, utilizing OAuth-integrated authentication to connect users with third-party services. The project distinguishes itself by integrating cloud document synchronization with external storage providers and offering direct publishing capabilities to platforms such as Medium. It also includes a dedicated Markdown-to-PDF converter for generating professional documents and a focus mode to create a

Ghostwriter is a distraction-free Markdown text editor and writing environment. It functions as a desktop application designed to minimize visual noise while authors compose long-form documents using Markdown syntax. The project integrates a live previewer that renders Markdown text into HTML in real time using a Webkit engine. It also serves as a document converter, allowing users to export Markdown files into various other formats through integrated processing tools. The software provides cross-platform text editing for Windows and Linux, built using the Qt framework for native performance

MarkEdit is a high-performance Markdown text editor and document navigator. It provides a scriptable editing environment that supports side-by-side HTML rendering for real-time formatting previews. The editor is distinguished by a multi-caret engine that enables rectangular block selections and simultaneous modification of multiple text ranges. It allows for extensive interface and functional customization through external CSS stylesheets and the integration of system-level scripts to automate repetitive tasks. The application includes tools for managing large documents, such as content bloc

This project provides a lightweight Markdown text editing component designed for integration into React applications. It offers a split-pane interface that allows users to author content in a raw text editor while simultaneously viewing a rendered preview, with synchronized scrolling to ensure the two views remain aligned during the writing process. The editor is built to be highly extensible, allowing developers to customize the interface by toggling specific toolbar buttons or preview areas. It supports a plugin-based architecture for custom parsing logic and provides a callback-driven work

This project is a modular rich text editing component for React applications, built on the ProseMirror framework. It provides a visual interface for composing and formatting content using markdown, while maintaining a structured document model that serializes back into clean markdown code. The editor is designed for high extensibility, allowing developers to inject custom behaviors and formatting commands through a plugin-driven architecture. It supports granular control over the editing environment, including the ability to override default styles, localize interface text, and configure spec

This project is a responsive Jekyll static site theme designed for technical blogs, documentation, and multilingual websites. It focuses on text readability and the presentation of technical content, providing a customizable CSS theme with multiple color palettes and dark mode toggling. The theme distinguishes itself through specialized rendering for technical assets, including mathematical formulas, diagrams, and syntax-highlighted code. It includes built-in internationalization support via translation keys to facilitate the creation of sites in multiple languages. The capability surface co

Fusuma is a markdown presentation framework and static slide generator that transforms Markdown and MDX files into structured slide decks for web-based presentations. It functions as a technical content renderer and an interactive presentation tool, enabling the creation of slides from text-based source files. The project distinguishes itself as a speaker delivery suite, providing tools for presentation rehearsal such as voice recording, timing analysis, and rehearsal timelines. It includes a dedicated presenter view with speaker notes and supports real-time slide annotations and live comment

This project is a browser-based Markdown composer and an embeddable JavaScript component designed to replace standard HTML text areas with a formatted editing interface. It serves as a tool for Markdown content authoring, providing a visual environment for creating and formatting text. The editor features a formatting toolbar and keyboard shortcuts for real-time Markdown parsing, along with integrated spell checking to identify errors as the user types. It includes a system for automatic draft management that saves content to local storage at configurable intervals to prevent data loss. The

TakeNote is a containerized web application designed as a markdown notes manager for developers. It provides a structured environment for storing technical documentation and plain text snippets using categories and favorites. The application functions as a specialized markdown text editor featuring multi-cursor support and keyboard shortcuts for high-efficiency text manipulation. It includes a live preview mode that renders markdown with syntax highlighting for code blocks. The system covers note organization and management through category-based filtering, bulk collection actions, and a dra

Easy Markdown Editor is a browser-based JavaScript library designed to replace standard HTML text areas with an interactive interface for structured document creation. It provides a web-based environment for Markdown content authoring, combining raw syntax input with visual formatting tools and real-time preview capabilities. The editor distinguishes itself through a plugin-driven toolbar architecture that allows for extensive interface customization, including adjustable layouts, icon visibility, and visual themes. It also integrates automated draft persistence, which saves content to local

StackEdit is a browser-based Markdown editor designed for structured document authoring and collaborative content creation. It functions as an offline-first web application, allowing users to maintain full access to their documents and editing tools without an active internet connection, with changes automatically synchronized once connectivity is restored. The platform distinguishes itself through its support for real-time multi-user collaboration, utilizing operational transformation to merge concurrent edits from multiple participants. It features a modular architecture that supports speci

Quarto is an open-source scientific and technical publishing system built on Pandoc that converts Markdown and Jupyter notebooks into a wide range of output formats. It functions as a multi-format document converter, a reproducible research platform, a static site generator for technical content, and an interactive dashboard builder, all within a single framework. The system is distinguished by its ability to produce HTML, PDF, Word, ePub, and slide decks from a single Markdown source, while embedding executable code blocks in Python, R, Julia, or Observable for dynamic, reproducible document

Mermaid-cli is a command line interface and programmatic tool that converts text-based diagram syntax into static visual assets. It functions as a headless browser renderer and markdown diagram processor, enabling the generation of diagrams through a CLI or a JavaScript-based generator. The tool distinguishes itself by supporting the conversion of diagram definitions into multiple image formats, including SVG, PNG, and PDF. It allows for custom diagram styling by applying external CSS files to override default themes and add visual animations. The project provides capabilities for markdown i

This project is a Vditor-based markdown editor designed for online writing and formatting. It provides a visual editing environment featuring instant rendering and split-screen previews for authoring markdown content. The editor includes specialized tools for generating slide-based presentations using structural separators and embedding technical diagrams, such as flowcharts, Gantt charts, and sequence diagrams. It also functions as a document converter, capable of transforming HTML into markdown and exporting files to PDF, Word, and image formats. The system manages document state through l

Macdown is a markdown text editor and HTML renderer designed for structured document composition. It provides a workspace for writing in lightweight markup syntax while simultaneously generating a live HTML preview of the rendered output. The editor distinguishes itself through a programmable interface, offering a command line utility to open files or pipe text directly into the application. It further supports extensibility via a plugin system that allows for the addition of custom features and functional modules at runtime. The application handles technical documentation requirements inclu

mavonEditor is a markdown editor component for Vue applications that functions as a markdown-to-HTML converter and a visual text editor. It provides a synchronized preview and a writing interface that renders markdown content in real-time. The project includes a security layer that cleans HTML tags and attributes through sanitization to prevent the execution of malicious scripts in the browser. The editor supports technical documentation authoring with capabilities for mathematical notation, footnotes, automated tables of contents, and code syntax highlighting. It also includes a system for

CloudPaste is a secure file sharing platform and multi-backend storage aggregator. It unifies local and S3-compatible cloud storage providers into a single managed file system, serving as a gateway for centralized file access and distribution. The platform distinguishes itself through a built-in browser-based Markdown editor for composing documents with formulas and diagrams. It provides secure content sharing using password protection, expiration dates, and path-restricted API keys to control programmatic access and visibility. The system covers broad capabilities in file management, includ

This project is a renderer and theme engine for Mermaid.js that converts diagram syntax into styled SVG graphics and ASCII text. It provides a type-safe diagram editor and a pipeline for transforming diagram source code into scalable vector graphics or plain text visuals. The system features a dedicated theme engine that maps editor colors and CSS variables to diagram elements. It enables dynamic diagram theming through CSS custom properties for real-time color updates and supports index-based styling to override the appearance of specific nodes and edges. The tool covers a range of visualiz

This is a VS Code extension that provides a suite of tools for editing, previewing, and managing Markdown documents. It integrates an authoring toolset, a link management system, and a rendering engine to support the creation of structured technical documentation and knowledge bases. The project distinguishes itself through advanced reference handling and accessibility features, such as a system that automatically updates internal links when files or headers are renamed and an artificial intelligence tool for generating descriptive image alt text. It also supports the rendering of Mermaid dia

This project is a web-based markdown editing component designed for integration into Vue applications. It provides a text input interface for creating and modifying markdown content, featuring real-time rendering and a live preview that transforms source text into formatted HTML. The editor is built on a modular framework that supports custom plugins and visual themes, allowing developers to extend core functionality and align the workspace appearance with host application designs. It utilizes a standardized hook architecture to enable these extensions, ensuring that the editing environment c

Atom is an extensible code IDE and hackable text editor designed for source code editing and the creation of custom development environments. It functions as a syntax highlighting editor and a version control integrated editor that tracks file changes and synchronizes code with remote repositories. The editor allows for the modification of its own core functionality and supports a package-based plugin system for creating custom themes and snippets. It also serves as a Markdown preview editor, providing side-by-side visual rendering for content authoring. The platform includes capabilities fo

Presenterm is a CLI presentation framework and tool used to create interactive slide decks directly in the terminal. It functions as a Markdown slide renderer, transforming Markdown files into formatted terminal presentations with support for synchronized speaker notes and custom YAML themes. The project distinguishes itself through a built-in terminal code executor that runs code snippets live during a presentation, replacing source blocks with real-time output. It also features a terminal image renderer capable of displaying local images, animated GIFs, and pre-rendered diagrams or mathemat

This project is a multi-purpose toolkit consisting of an AI agent knowledge base, a developer tool UI kit, a markdown presentation framework, a technical diagram renderer, and a TypeScript library bundler. It provides the infrastructure to curate documented guidelines into structured collections for automated AI outputs while offering tools for creating technical content and distributing software libraries. The markdown presentation framework allows for the creation of interactive slide decks featuring synchronized code blocks, motion transitions, and the rendering of mathematical formulas an

QOwnNotes is a desktop note editor that stores each note as a plain-text Markdown file on the local filesystem, avoiding proprietary formats and enabling direct file access. It functions as a Nextcloud Notes client, syncing notes and metadata with Nextcloud or ownCloud servers through a companion API service for versioning and sharing. The application also integrates with AI providers and exposes a local MCP server for external agents to search and fetch notes, and includes a companion browser extension for capturing web content, bookmarks, and screenshots. The editor distinguishes itself thr

Pymdown-extensions is a collection of functional enhancements designed to extend the capabilities of standard Markdown processors. It functions as a Python-based library that integrates into the document conversion pipeline to support complex layouts, rich formatting, and specialized content structures. The library distinguishes itself through a modular extension pipeline that allows for advanced syntax transformation and configurable attribute processing. By hooking into the parsing lifecycle, it enables the creation of structured containers, the embedding of binary assets, and the dynamic i

Ghostwriter is a distraction-free markdown text editor and document processor. It provides a focused writing environment for composing documents using markdown syntax, separating the drafting process from final formatting. The application features a minimalist interface designed to minimize visual clutter, including the ability to disable deletion keys to enforce a forward-only drafting flow. It includes a live statistics dashboard for tracking word counts and session metrics, as well as visual highlighting that fades non-active text to focus attention on the current line, sentence, or paragr