Open Source Java Markdown Editors

📝 NotepadXX is your all-in-one, cross-platform text editor — lightning-fast, powerful, and designed to boost your productivity. Built with Java and optimized for Windows & Linux, it combines the simplicity of Notepad with advanced features modern developers love. 🔥 Key Highlights: Real-time code linting (ANTLR-powered) with tooltips Live Markdown preview (split view or pop-out) Built-in terminal, file explorer & browser launchers 6 beautiful themes (Dark, Light, Darcula, macOS) Blazing-fast UI with JavaFX/Swing hybrid Fully offline & privacy-respecting (zero telemetry) 🐞 Bug Fixes in v1.2.1 Fixed crash when Markdown Preview is triggered on systems without JavaFX (now shows a friendly error message). Prevented JavaFX WebView from initializing on headless systems to avoid startup errors. Resolved fallback issue: now switches correctly to Swing JFileChooser when JavaFX is unavailable. Improved error dialog display for Markdown Preview failures.

Mindolph is an open source personal knowledge management software with Gen-AI support for all desktop platforms.

Civiilzer is a Dedicated Personal Knowledge Management Tool built by Java. You can use it for purposes such as a high level note application, document store, information hub, etc. With Civilzer's Markdown editor, you can edit text in Markdown format, but the editor provides a lot more additional features, so you can edit your content in a more stylish fashion. You can structure and organize your data with tagging, relating, bookmarking. Civilizer's full text search functionality is simple but powerful. You can search with simple space separated keywords as other tools, but unique Civilizer Search Operators can boost your search ability a lot further. Your search phrase can be fine-tuned as far as you can go. Another useful feature is its multi-panel view. It helps you view multiple data in the same screen eliminating the need to jump across separate pages. Also Civilizer has its own file system. You can store any file with Civilizer and link files to Civilizer's regular data.

DownSmith provides an intuitive editing experience with comprehensive formatting tools, syntax highlighting, live preview, table creation, spell checking, footnotes, HTML export, and intelligent image handling. Runs without Java being installed on Windows. On macOS and Linux requires Java 11 or better installed. A Java 8 version is provided that has all the functionality of the Java 11 version except footnotes.

Personal blog, the pioneering work of Spring Boot, using Spring Boot + MyBatis, front-end Bootstrap + LayUI, supports the lightweight Markdown editor Editor.md favored by programmers, and supports tag classification retrieval. Core framework is SpringBoot, ORM framework is MyBatis, MyBatis toolis MyBatis Mapper, MVC frameworks is Spring MVC, Template engine is Freemarker, Compilation auxiliary plug-in: Lombok, CSS Framework is BootStrap 4.0, Markdown editor is Editor.md, and Database is MySQL