CollabCode

CollabCode is a real-time, zero-setup live coding platform that makes learning Python interactive, collaborative, and engaging for students and teachers.

Comment

Inspiration

Coding education is often hindered by complicated setups, lack of real-time collaboration, and disengaged students. I wanted to create a solution that makes learning to code seamless, interactive, and accessible for everyone. Inspired by classroom struggles and the growing need for effective remote learning, CollabCode was born.

Recent Updates & Improvements

CollabCode has been significantly upgraded to enhance performance, security, and user experience. Connections now work like modern social platforms with request-based linking, reducing bugs and optimizing efficiency by storing only user IDs. Profile images are now supported, securely stored in the cloud. Data persistence ensures that user progress remains intact even if the server goes down. Interactive coding sessions have been improved, allowing teachers to grant students real-time coding access for both solo tasks and group challenges. Security and stability enhancements include mandatory login before joining sessions, extended authentication for up to 8 hours, and a robust suite of security libraries such as Helmet, express-rate-limit, CORS, cookie-parser, express-session, and Morgan to safeguard against potential threats. Additionally, hosts' cursors and selections are now visible to all users for better collaboration, and session IDs are displayed with a copy button for seamless sharing. If the host leaves, sessions automatically close, redirecting all participants to the home page.

What it does

CollabCode is an interactive live coding platform designed for Computer Science education. It allows teachers to host real-time coding sessions where students can view, test, and collaborate on Python code effortlessly. With built-in classroom management tools, gamified progress tracking, and a social networking aspect, CollabCode transforms coding lessons into an engaging experience.

Key Features:

  • Live Coding Sessions – Teachers can demonstrate code execution in real-time.
  • Peer Collaboration – Students can join public or private sessions, code together, and interact.
  • Classroom Management – Teachers can divide students into groups, track participation, and moderate sessions.
  • User Profiles & Stats – Track coding hours, session attendance, ranks, and skill levels.
  • Zero Setup – Fully browser-based with Python execution handled on the backend.
  • Host's Cursor & Selection – Now visible to all users for better collaboration.
  • Easier Joining – Session ID is displayed at the top, with a copy button for quick sharing.
  • Improved Session Handling – If the host leaves, the session is deleted, and all users are redirected to the home page.

How I built it

CollabCode was built using a modern tech stack to ensure efficiency and scalability:

  • Frontend: React + Lite + Material UI for an intuitive and responsive UI.
  • Backend: Node.js + Express for real-time communication and session management.
  • Code Execution: Python runtime on the server for seamless execution.
  • WebSockets: Used for instant updates and a smooth collaborative experience.
  • Authentication & Security: Token-based authentication and bcrypt for password encryption.
  • Development Tools: Monaco Editor for coding and Xterm.js for real-time terminal output.

Challenges I ran into

  • Real-Time Syncing: Ensuring seamless communication between multiple users required efficient WebSocket management.
  • User Management & Permissions: Implementing role-based access and moderation tools for teachers.
  • Ensuring Security: Secure authentication and user data protection.

Accomplishments that I'm proud of

  • Successfully built a real-time collaborative coding platform from scratch.
  • Created an intuitive UI that enhances the user experience.
  • Great website design.
  • Implemented seamless live classroom interactions with teacher moderation tools.
  • Developed a gamification system to motivate students.
  • Ensured zero setup for users, making coding education accessible anywhere.

What I learned

  • The importance of efficient state management in real-time applications.
  • Best practices for handling concurrent users in a live coding environment.
  • How to improve student engagement through gamification and interactive features.

What's next for CollabCode

  • Expanding language support beyond Python to cater to more courses.
  • AI-driven code assistance to help students learn faster.
  • Enhanced collaboration tools, including voice/video chat and shared whiteboards.
  • Mobile-friendly version for accessibility on all devices.
  • Integration with learning management systems to make CollabCode a go-to tool for schools and universities.

CollabCode is just the beginning — I'm committed to making coding education more interactive, accessible, and engaging for students and teachers worldwide!

Built With

Share this project:

Updates

posted an update —

CollabCode Update

Significant improvements have been made to enhance performance, security, and user experience.

Connections Reworked – Now request-based, similar to modern social platforms, reducing bugs and improving efficiency by storing only user IDs.
Profile Images – Users can now set and store profile pictures securely in the cloud.
Persistent User Data – Data remains safe even if the server goes down, thanks to an integrated API database.
Interactive Coding Sessions – Teachers can grant students real-time coding access for individual tasks or collaborative work, making lessons more dynamic.
Security & Stability Enhancements –
    Users must log in before joining a session.
    Sessions maintain authentication for up to 8 hours.
    Security features include Helmet, express-rate-limit, CORS, cookie-parser, express-session, and Morgan to prevent common attacks.

CollabCode remains completely free to ensure accessible computer science education for everyone.

Log in or sign up for Devpost to join the conversation.

posted an update —

Update Released!

Host's Cursor & Selection: Now visible to all users for better collaboration. Easier Joining: Session ID is displayed at the top, with a copy button for quick sharing. If the host leaves, the session is deleted, and all users are redirected to the home page.

Log in or sign up for Devpost to join the conversation.