Prism — Code Editor based on Java Swing
Status: 🚧 Under active development 🚧
Platform: Windows 7 (x86-64) → Latest Windows release
Prism is an open-source, lightweight, super-fast, and highly customizable code editor built entirely with Java Swing. Designed for performance and simplicity, Prism aims to deliver a smooth editing experience for developers who prefer a native desktop editor without the overhead of large frameworks.
Click here to install Prism.
Prism is software designed for low-end computers, especially for users who still continue using outdated operating system versions, such as Windows 7. The application keeps its simplicity, without AI integration, and especially its performance.
If you currently have a device that has the ability to run other IDEs without any issues, then we recommend you not use Prism, unless you want to try it out!
Prism is packed with powerful features designed for speed and efficiency, helping you write, navigate, and run your code with ease.
- Syntax Highlighting: Beautiful and accurate coloring for popular programming languages.
- Smooth Rendering: Enjoy responsive, lag-free text rendering, even with large files (depending on your graphics card).
- Advanced Text Features: Includes essential features like line numbers, multiple tabs & sessions, and smart auto-indentation.
- IntelliSense: Powerful Autocomplete to speed up your coding.
- Compiler Error Checker (Upcoming!): Real-time feedback on code errors.
- File Explorer: A familiar tree-style project view with drag-and-drop support for easy file management (move, open, and view details).
- Quick Jumps: Add bookmarks to key lines and quickly jump between definitions or markers.
- Code Outline: Get a real-time, structural view of your code with clickable symbols for fast navigation.
- File Switching: Use the quick file switcher and recent file list to open files instantly.
- Integrated Search: Powerful, built-in search and replace functionality.
- Built-in Terminal: Access a system terminal (Powershell/Command prompt) directly inside Prism to run scripts and commands easily.
- Text Comparison (Difference): Use the side-by-side diff viewer with highlighted line changes to compare files quickly.
- Quick Commands (Upcoming!): Execute scripts and commands directly via integrated tools.
- Built for Speed: Optimized rendering and a low memory footprint ensure a snappy experience on both modern and older systems.
- Extensible: Customize your setup with the plugin system and easily configure settings via JSON.
- Operating System: Windows 7 or newer
- Architecture: x86-64 (64-bit)
Go to releases, choose which version you want to download, click on Assets, and then click on the installer file (like Prism_Setup_x64_build_07.10.2025.exe) to download it. When the download finishes, double-click on it to install Prism.
The Java Runtime Environment (JRE), SE 21, is bundled within the application's installer. There is no need to worry if you have an outdated Java version or have never installed Java before.
Installation Screenshot
Want to contribute? Prism is open for collaboration as development continues.
Use Launch4J. Launch4j is a cross-platform tool for wrapping Java applications distributed as jars in lightweight Windows native executables.
You can load the example Launch4J script from here. Please ensure all paths are updated to the current ones before building.
Make sure that the JRE path (in JRE tab) is "JRE", not "%JAVA_HOME%;%PATH%".
Use Inno Setup. Inno Setup is a free, open-source installer creation tool for Windows that compiles an application's files into a single executable installer file.
You can load the example Inno Setup script from here. Please ensure all paths are updated to the current ones before building.
Make sure to include the following files and directories:
Prism is released under the Apache License 2.0