ExecuteMe is a powerful and minimalistic online code execution platform that allows developers to write, run, and test code in multiple programming languages instantly and securely — all within the browser.
Whether you're experimenting with a new idea or teaching code, ExecuteMe gives you a real-time, sandboxed environment that works out of the box.
- ⚡ Instant Code Execution – Run your code in real-time with just one click
- 🔒 Secure Sandbox – Ensures your code runs in a safe, isolated environment
- 🧠 Multi-language Support – Supports a growing list of languages including:
- 🐍 Python
- 🟨 JavaScript
- 🟦 TypeScript
- ☕ Java
- 💙 Kotlin
- 🎨 Full Syntax Highlighting – Modern and readable code editor with theme support
- 🖥️ Responsive UI – Works smoothly across all devices
- 🌐 Live User Activity – Shows active coders in real-time
- 💾 Open Source – Freely available to use, modify, and contribute
- ⚛️ NextJs – For frontend and tailwindcss for designing user interface
- 🧰 Monaco Editor – Powerful web-based code editor (from VS Code)
- 🌍 Node.js + Express – Backend service for execution management
- 🔄 Docker – Containerized code execution
- 📡 Socket.IO – Real-time connection to track active users
- 📁 NodeCache – In-memory cache for managing live sessions
- 🔐 Custom Docker Images – Tailored environments per language
Designing ExecuteMe required solving real-world challenges in scalability, isolation, and memory/resource management:
- 📦 Each execution triggers a new Docker container, isolated per language and user
- 🧾 Code is saved temporarily in a unique
UUIDdirectory (e.g.,/temp/<uuid>) - 🧼 After execution, both the container and the temporary code directory are destroyed automatically
- ✅ Ensures complete statelessness and no leftover data between runs
- 🧠 Containers are limited via flags: --memory=512m and --cpus=0.5
- 🔁 Ensures no user can overuse system resources
- 🧹 Automatic cleanup after every run helps maintain low disk and memory usage
- ⏱️ Uses
async/awaitandpromisify(exec)to avoid blocking the event loop - ⚡ Handles multiple user requests at the same time, spawning separate containers for each
- 🛠️ Every language is handled via its own custom-built Docker image (
executor-python,executor-java, etc.)
- 🔐 Code runs in completely sandboxed containers with:
- No access to host machine
- No persistent file system or shared memory
- 🚫 Containers are removed after use with --rm to prevent abuse
- ✅ Each language has its own minimal, locked-down Docker image
- 📡
Socket.IO + NodeCachemanage user connections in real-time - 👀 Displays current active users to the frontend
- ♻️ Cleans up cache on disconnect to prevent stale connections
Before you get started, ensure you have the following installed on your system:
-
Docker: Docker Engine and Docker Compose (Docker Desktop includes both).
-
Node.js (LTS version, e.g., 20.x or higher)
-
npm (comes with Node.js)
executeme is a fully open-source project, and contributions are highly encouraged! Whether it's adding new language support, improving performance, fixing bugs, or enhancing documentation, your input is valuable.
- Fork the GitHub repository.
- Clone your fork.
- Create a new branch for your feature or bug fix.
- Make your changes, write tests, and ensure code quality.
- Open a Pull Request with a clear description of your work.
This project is licensed under the MIT License - see the LICENSE file for details.
If executeme helps you or your project, consider showing your support. Your contributions help maintain and improve this tool for the entire developer community!
- Sponsor on GitHub: https://github.com/sponsors/devlopersabbir
- Buy Me a Coffee: https://buymeacoffee.com/devlopersabbir
Made with contrib.rocks.