Kalam (कलम) – Bring Your Ideas to Life.

Kalam is a digital whiteboard designed for brainstorming and visualizing ideas. Inspired by Excalidraw, it allows users to sketch, collaborate in real-time, and save their drawings effortlessly. Built with Turborepo, Next.js, Node.js, and WebSockets, Kalam ensures a fast, modular, and scalable experience.

🚀 Features

✅ Freehand Drawing – Draw anything on the canvas, just like a real whiteboard.
✅ Shapes & Text – Add rectangles, circles, lines, and text annotations.
✅ Real-time Collaboration – Multiple users can edit the board simultaneously.
✅ Undo/Redo & Eraser – Correct mistakes effortlessly.
✅ Optimized Performance – Uses Turborepo for efficient monorepo management.

🏗️ Tech Stack

Frontend: Next.js (React, TypeScript)
Backend: Node.js (Express, WebSockets)
Realtime Communication: WebSockets
Build System: Turborepo

Turborepo starter

This Turborepo starter is maintained by the Turborepo core team.

Using this example

Run the following command:

npx create-turbo@latest

What's inside?

This Turborepo includes the following packages/apps:

Apps and Packages

• docs: a Next.js app
• web: another Next.js app
• @repo/ui: a stub React component library shared by both web and docs applications
• @repo/eslint-config: eslint configurations (includes eslint-config-next and eslint-config-prettier)
• @repo/typescript-config: tsconfig.jsons used throughout the monorepo

Each package/app is 100% TypeScript.

Utilities

This Turborepo has some additional tools already setup for you:

• TypeScript for static type checking
• ESLint for code linting
• Prettier for code formatting

Build

To build all apps and packages, run the following command:

cd my-turborepo
pnpm build

Develop

To develop all apps and packages, run the following command:

cd my-turborepo
pnpm dev

Remote Caching

Tip

Vercel Remote Cache is free for all plans. Get started today at vercel.com.

Turborepo can use a technique known as Remote Caching to share cache artifacts across machines, enabling you to share build caches with your team and CI/CD pipelines.

By default, Turborepo will cache locally. To enable Remote Caching you will need an account with Vercel. If you don't have an account you can create one, then enter the following commands:

cd my-turborepo
npx turbo login

This will authenticate the Turborepo CLI with your Vercel account.

Next, you can link your Turborepo to your Remote Cache by running the following command from the root of your Turborepo:

npx turbo link

Useful Links

Learn more about the power of Turborepo:

• Tasks
• Caching
• Remote Caching
• Filtering
• Configuration Options
• CLI Usage