Open Source Java Code Editors
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Java Code Editors
View 102 business solutionsBrowse free open source Java Code Editors and projects below. Use the toggles on the left to filter open source Java Code Editors by OS, license, language, programming language, and project status.
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IntelliJ Community Edition
IntelliJ IDEA & IntelliJ Platform
IntelliJ Community is the open source upstream of JetBrains’ IntelliJ IDEA, forming the core of a powerful, extensible, and intelligent development environment. It provides foundational features like a robust editor with code completion, syntax highlighting, refactoring tools, version control integrations, terminal, debugger, and plugin architecture. Since it’s open, community developers can contribute to language supports, UI tweaks, and platform enhancements. From this base, JetBrains builds full editions (Ultimate) by layering proprietary features for enterprise frameworks and integrations. IntelliJ Community supports multiple JVM-based languages (Java, Kotlin, Scala, Groovy) and serves as a host for plugin ecosystems that add support for web, database, and cloud tooling. The project emphasizes performance, modularity, and a responsive user experience, maintaining a codebase that balances long-term maintainability with cutting-edge developer features. -
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jVi is a vi/vim editor clone built on top of the javax.swing.text package. Available for NetBeans and JBuilder. jVi is designed to quickly and easily integrate into many disparate java based desktop apps, from IDE's to mail-news readers.
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PyDev is a Python Development Environment (Python IDE plugin for Eclipse). It features an editor with code completion, code analysis, refactoring, outline view, debugger, mark occurrences and other goodies - check http://pydev.org for more details). It's kept going by community contributions, so, if you think it's a worthy project, please contribute through http://pydev.org
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jEdit
jEdit is a programmer's text editor written in Java.
jEdit is a programmer's text editor written in Java. It uses the Swing toolkit for the GUI and can be configured as a rather powerful IDE through the use of its plugin architecture. -
MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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Apache NetBeans
Apache NetBeans
Apache NetBeans is much more than a text editor. It highlights source code syntactically and semantically, lets you easily refactor code, with a range of handy and powerful tools. Apache NetBeans provides editors, wizards, and templates to help you create applications in Java, PHP and many other languages. Apache NetBeans can be installed on all operating systems that support Java, i.e, Windows, Linux, Mac OSX and BSD. Write Once, Run Anywhere, applies to NetBeans too. -
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AndroidIDE
AndroidIDE is an IDE for Android to develop full featured Android apps
An IDE to develop real, Gradle-based Android applications on Android devices. -
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Acode
A powerful text/code editor for Android
Welcome to Acode Editor, a powerful and versatile code editing tool designed specifically for Android devices. Whether you're working on HTML, CSS, JavaScript, or other programming languages, Acode empowers you to code on-the-go with confidence. Step into the future of coding with our innovative plugin system. This all-new feature is compatible with a wide range of plugins, increasing Acode's functionality to meet all your development needs. With over 30 plugins already available in the plugin store, the possibilities are endless. Acode lets you build and run websites right in your browser, debug with ease using the built-in console, and edit a wide range of source files from Python and CSS to Java, JavaScript, Dart, and more. -
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CP Editor
The IDE for competitive programming
CP Editor is designed for competitive programming. It helps you focus on your algorithms and automates the compilation, execution and testing of your code. It can fetch test cases from different platforms and submit solutions to Codeforces. It automates all that's reasonably possible and allows you to purely focus on your code. Say no to manual efforts of running and testing your code against expected outputs. It can fetch test cases automatically from almost all competitive programming sites. No more copy-pasting! With a single click, you can run your code on multiple test cases and get verdicts. Thanks to CF tools, It can submit your solution directly to codeforces and show you verdict without leaving the editor. -
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JByteMod-Beta
Java bytecode editor
JByteMod is a multifunctional bytecode editor with syntax highlighting and live decompiling and method graphing. -
99.99% Uptime for MySQL and PostgreSQL DatabasesCloud SQL Enterprise Plus delivers near-zero downtime with 35 days of point-in-time recovery. Supports MySQL, PostgreSQL, and SQL Server.
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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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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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BitCode Java IDE
Lightweight Java IDE with syntax highlighting and convenient features.
BitCode is a lightweight and versatile Integrated Development Environment (IDE) designed for Java programming. It offers a user-friendly interface with features tailored to enhance your coding experience. -
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Delphi : VRCalc++ OOSL (Script) and more
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
Vincent Radio {Adrix.NT} Sources Library & Applications : Delphi C++ Java VRCalc++ C# VRCalc++ Object Oriented Scripting Language - Engine Source Pascal Code - Delphi Packages Build Prjs - VRCalc++ Scripted System Std RT Library - Guides & Docs (CHM, PDF, DOCX) - VCL & FMX (FireMonkey) Support - Script Test Code (Lang RTL VCL FMX) - Visual Stage Project : VCL & FMX Paged Lists & Iterators : Delphi C++ Java C# Multi-Dim Arrays & Direct Graph Classes : Delphi C++ Java VRCalc++ C# Delphi Drag&Drop Applications - VRCalc++ Script Executors: Terminal, VCL, FMX - VRMultiEdit - VRLazyCodeEditor - VR Astro Vision (Astrology) - Paged List Test - VRMosaic : Delphi C++Builder Java C# +with auto resolver - VR Free Chess 2D - VRBlocks - VRGraphStage - VR TTT OX + icons & bitmaps + VCL VisualStyles + Build Projects + instructions to build projects to build projects - Delphi : RAD Studio - C++ : Dev-C++ - java : NetBeans - C# : MS/VS adrixnt@hotmail.it -
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DomainMath IDE
An open source gui frontend application for GNU Octave
DomainMath IDE is an open source GUI front-end application for GNU Octave -
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SCedit is a source code editor developed in java hence platform independent and light weight easy to use application. It provides many features like auto formatting, multiple language selection, syntax highlighting, color template customization etc.
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Delphi : VRCalc++ and more Binary Exec
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)
Vincent Radio {Adrix.NT} Embarcadero : Delphi : Executable Binaries Delphi : VRCalc++ Object Oriented Scripting Language : Engine + Ext Libraries VRCalc++ OOSL Visual Stage Project : VCL & FMX (FireMonkey) VRCalc++ Script Executor: - VCL Console - Terminal Console - FMX Console + VRCalc++ OOSL : VR System Scripted Standard Runtime Library Delphi Applics - VR Multi Editor : Smart Text Editor - VR Lazy Code Editor : Smart RTF Multi Lang Code Text Editor - VR Astro Vision : Astrology Program - VR Free Chess 2D : Chess Game Program - VR Mosaic : Puzzle Resolver Program (VCL, FMX) - VR Blocks game - VRGraphStage - VR TTT OX game - Embarcadero Binary Runtime Libraries - VR Binary Runtime Libraries for Delphi & C++Builder - Visual Styles Java Applications - Analog Clock - VR Hanoi Towers - VR Rects World Sample - VR Free Chess 2D - VR Mosaic with auto resolver - Action/Entity Model Test includes installation instructions adrixnt@hotmail.it -
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NotepadXX
NotepadXX: A Lightweight, Powerful Text Editor for Every User
📝 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. -
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Axel-DICE
Axel-DICE Code Editor For Windows,Linux
🌈 Axel-DICE The Ultimate Code Editor for Effortless Coding! 💻🎲Axel-DICE revolutionizes coding with Dynamic Integrated Code Editor(DICE), allowing you to run code instantly without saving or compiling. With its user-friendly interface, you can write and execute code effortlessly with a single click. Save time, eliminate manual processes, and unleash your coding potential! ⚡️🔥 🚀 Lightweight and fast: No complex setup required. Install Axel-DICE and start coding right away! 🕵️♀️ Auto Language Detection: Automatically detects the programming language C, C++, Java, and Python. 🔍 Simplified Execution: Simply paste your code and click the run button to execute it, eliminating the need to create files or deal with boilerplate code. Axel DICE automates the entire process for you. 📊 Dynamic Terminal: Instantly see program output in real-time, providing immediate feedback on your code execution. 🍀For More Info: https://github.com/Vignesh-72/Axel-DICE -
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This project was created to show a way to highlight keywords of any language in a simple way. The resource which has been used is ANLTR (www.antlr.org). You are free to adapt it for your language, you just have to define the keywords in the grammar file.
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Swing Artist
Mini Java IDE and Swing builder
The aim of this project is to build an IDE for Java language which can be used to develop GUI based applications easily without knowing about the GUI components in detail. The idea is to enable users to make GUI as if they are using paint application to draw a design and later generating the code for it. The project also includes a built in Code Editor for editing Java applications. The code editor can also be used to edit file of any supported text file format. The work is focused on the layout of the components that gives the interface a clear and consistent look, conforming to specifiable interface guidelines, in an application and across applications. This interface builder provides an environment for specifying component and layout specifications for the interface of Java applets and applications. The tool enables anyone who knows the semantics of the Java Abstract Windowing Toolkit (java.awt) to build quality interfaces. This is achieved by integrating general design principles -
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AUNA Smartpad will be very similar to Notepad++ (found here on Sourceforge) in that it is a source code editor with a tabbed interface, configurable syntax highlighting... but will also include an intellisense feature and have a different interface.
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Coded is a graphically oriented source code editor. With the use of class and method wizards, advanced code manipulation via drag-and-drop, automatic code formatting, and autocomplete/completion suggestion, Coded will make the process of editing a breeze
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The fluid editor is a prototype source code editor supporting a "bring from" exploration model.With the fluid editor programmers can avoid explicit navigation between source documents by incorporating related code into the document under examination
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Google Fusion Tables Sql Console
SQL front end for data administration and quick query hacks
Querying and data administration front end for Google Fusion Tables Sql providing augmented Sql features. Coming as Eclipse plugin (see External Links) or barren stand alone client with low resource footprint, a code editor matching contemporary standards and command line mode.
