🐠 Nemo Editor

Just keep coding

A lightweight, fast, and beautiful code editor built with Kotlin Multiplatform and Compose Multiplatform. Supporting 19+ programming languages with syntax highlighting, autocomplete, and more!

📥 Download

🤖 Android (Google Play)
🍎 iOS (App Store) (coming soon)
🌐 Web Version
📦 Latest Release (GitHub)

✨ Features

🎨 Beautiful & Modern UI

19 gorgeous themes (Dark & Light variants)
Animated logo and smooth transitions
Clean, distraction-free interface
Responsive design for all screen sizes

💻 Powerful Code Editor

Syntax Highlighting - 19+ languages supported
Smart Autocomplete - Context-aware suggestions with keyboard navigation
Error Detection - Real-time syntax error highlighting
Code Formatting - Auto-format your code beautifully
Auto-Indentation - Intelligent indenting based on language
Multi-tab Editing - Work on multiple files simultaneously
Find & Replace - Regex support, case-sensitive, whole word matching
Line Numbers - Toggle-able with gutter highlighting
Undo/Redo - Full history support (up to 100 actions)
Read-only Mode - View files without editing

📁 File Management

File explorer with CRUD operations
Open files and folders
Create, rename, delete files/folders
Recent files tracking
File details with metadata
Cross-platform file system support

⚡ Performance

Lightweight and fast
Minimal resource usage
Smooth scrolling and editing
Optimized rendering

🌐 Cross-Platform

Android - Native app
iOS - Native app
Desktop - Windows, macOS, Linux
Web - WASM support

🚀 Quick Start

Prerequisites

JDK 17 or higher
Android Studio (for Android development)
Xcode (for iOS development, macOS only)

Clone & Run

# Clone the repository
git clone https://github.com/Ma7moud3ly/nemo-editor.git
cd nemo-editor

# Run on Desktop
./gradlew :composeApp:run

# Run on Android
./gradlew :composeApp:installDebug

# Run on Web
./gradlew :composeApp:wasmJsBrowserDevelopmentRun

📦 Using Nemo Editor in Your KMP Project

📦 Installation

commonMain.dependencies {
    implementation("io.github.ma7moud3ly:nemo-editor:1.0.2")
}

Example: Basic Kotlin Editor

@Composable
fun MyEditor() {
    val codeState = rememberCodeState(
        code = "fun main() {\n    println(\"Hello\")\n}",
        language = Language.KOTLIN
    )
    NemoCodeEditor(state = codeState)
}

Example: Python Editor

@Composable
fun PythonEditor() {
    val codeState = rememberCodeState(
        code = """
                def fibonacci(n):
                    if n <= 1:
                        return n
                    return fibonacci(n-1) + fibonacci(n-2)
                
                for i in range(10):
                    print(fibonacci(i))
            """.trimIndent(),
        language = Language.PYTHON
    )


    val editorSettings = remember {
        EditorSettings(
            theme = EditorThemes.NEMO_DARK,
            tabSize = 4,
        )
    }

    NemoCodeEditor(
        state = codeState,
        settings = editorSettings,
        modifier = Modifier.fillMaxSize()
    )
}

See complete documentation for more examples.

🌍 Supported Languages

Language	Extensions	Highlighting	Formatting	Autocomplete	Errors
Kotlin	.kt, .kts	✅	✅	✅	✅
Python	.py	✅	✅	✅	✅
Java	.java	✅	✅	❌	✅
JavaScript	.js	✅	✅	❌	✅
TypeScript	.ts	✅	✅	❌	✅
C	.c, .h	✅	✅	❌	❌
C++	.cpp, .hpp	✅	✅	❌	❌
C#	.cs	✅	✅	❌	❌
Go	.go	✅	✅	❌	❌
Rust	.rs	✅	✅	❌	❌
Swift	.swift	✅	✅	❌	❌
PHP	.php	✅	✅	❌	❌
Ruby	.rb	✅	✅	❌	❌
HTML	.html, .htm	✅	✅	❌	❌
CSS	.css, .scss	✅	✅	❌	❌
XML	.xml	✅	✅	❌	❌
JSON	.json	✅	✅	❌	❌
Markdown	.md	✅	❌	❌	❌
SQL	.sql	✅	✅	❌	❌
Shell	.sh, .bash	✅	✅	❌	❌

🎨 Available Themes

Dark Themes:

Nemo Dark (Default)
Monokai
Dracula
One Dark
Nord
Gruvbox Dark
Solarized Dark
Material Palenight
Atom One Dark
Tokyo Night

Light Themes:

Nemo Light
GitHub Light
Solarized Light
Gruvbox Light
Atom One Light
Material Lighter
Quiet Light
Light+
Tomorrow

⌨️ Keyboard Shortcuts

General

Windows/Linux	macOS	Action
Ctrl + N	⌘ + N	New File
Ctrl + O	⌘ + O	Open File
Ctrl + Shift + O	⌘ + Shift + O	Open Folder
Ctrl + S	⌘ + S	Save
Ctrl + Shift + S	⌘ + Shift + S	Save As
Ctrl + W	⌘ + W	Close Tab
Ctrl + Shift + W	⌘ + Shift + W	Close All Tabs

Edit

Windows/Linux	macOS	Action
Ctrl + Z	⌘ + Z	Undo
Ctrl + Y	⌘ + Y	Redo
Ctrl + D	⌘ + D	Duplicate Line
Ctrl + L	⌘ + L	Delete Line
Ctrl + /	⌘ + /	Toggle Comment
Ctrl + ]	⌘ + ]	Indent
Ctrl + [	⌘ + [	Unindent

Search & Format

Windows/Linux	macOS	Action
Ctrl + F	⌘ + F	Find
Ctrl + H	⌘ + H	Find & Replace
Ctrl + Shift + F	⌘ + Shift + F	Format Code

View

Windows/Linux	macOS	Action
Ctrl + =	⌘ + =	Zoom In
Ctrl + -	⌘ + -	Zoom Out
Ctrl + B	⌘ + B	Toggle Sidebar
Ctrl + Tab	⌘ + Tab	Next Tab
Ctrl + Shift + Tab	⌘ + Shift + Tab	Previous Tab

Autocomplete

↓ - Select next
↑ - Select previous
Enter or Tab - Accept
Esc - Dismiss

See complete shortcuts guide.

🏗️ Building from Source

Android

# Debug APK
./gradlew :composeApp:assembleDebug

# Release APK
./gradlew :composeApp:assembleRelease

# Output: composeApp/build/outputs/apk/

Desktop

Windows (MSI)

./gradlew :composeApp:packageMsi
# Output: composeApp/build/compose/binaries/main/msi/

macOS (DMG)

./gradlew :composeApp:packageDmg
# Output: composeApp/build/compose/binaries/main/dmg/

Linux (DEB)

./gradlew :composeApp:packageDeb
# Output: composeApp/build/compose/binaries/main/deb/

Web (WASM)

# Development
./gradlew :composeApp:wasmJsBrowserDevelopmentRun

# Production
./gradlew :composeApp:wasmJsBrowserDistribution
# Output: composeApp/build/dist/wasmJs/productionExecutable/

📖 Documentation

NemoCodeEditor API - Complete API reference
Keyboard Shortcuts - Complete shortcuts guide

🤝 Contributing

Contributions are welcome! Here's how:

Fork the repository
Create a feature branch: git checkout -b feature/amazing-feature
Commit changes: git commit -m 'Add amazing feature'
Push to branch: git push origin feature/amazing-feature
Open a Pull Request

Guidelines

Follow Kotlin coding conventions
Write clear commit messages
Add tests for new features
Update documentation
Ensure all platforms build

📄 License

MIT License - see LICENSE file.

🙏 Acknowledgments

Built with Kotlin Multiplatform
UI by Compose Multiplatform
Inspired by VSCode, Sublime Text, and other great editors

📧 Contact

Author: Mahmoud Aly
GitHub: @Ma7moud3ly
Project: Nemo Editor
Issues: Report a bug

⭐ Show Your Support

If you find Nemo Editor useful:

⭐ Star the repository
🐛 Report bugs
💡 Suggest features
🤝 Contribute code
📢 Share with others

Made with ❤️ using Kotlin Multiplatform

Nemo Editor - Just keep coding 🐠

⭐ Star on GitHub • 📖 Documentation • 🐛 Report Bug • 💬 Discussions

Name		Name	Last commit message	Last commit date
Latest commit History 10 Commits
.github/workflows		.github/workflows
composeApp		composeApp
docs		docs
fastlane		fastlane
gradle		gradle
images		images
kotlin-js-store/wasm		kotlin-js-store/wasm
nemo-editor		nemo-editor
.gitignore		.gitignore
README.md		README.md
build.gradle.kts		build.gradle.kts
gradle.properties		gradle.properties
gradlew		gradlew
gradlew.bat		gradlew.bat
settings.gradle.kts		settings.gradle.kts

Ma7moud3ly/nemo-editor

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