A modern, open-source Postman alternative built with Next.js 15, TypeScript, Prisma, TailwindCSS, shadcn/ui, TanStack Query, and Zustand.
It provides a sleek UI and developer-focused workflow to test and manage REST APIs and WebSocket connections efficiently.

• Send HTTP requests with methods (GET, POST, PUT, DELETE, etc.)
• Manage request parameters, headers, and body (raw JSON / text)
• Request response viewer with pretty JSON formatting
• Track response time, size, and status
• Save requests inside collections for reusability
• Request history & response persistence

• Connect to ws:// and wss:// endpoints
• Send and receive messages in real time
• Support for multiple protocols
• View messages with metadata (direction, payload, size, timestamp)
• Save messages for later inspection

• Create and manage multiple workspaces
• Invite team members via unique invite links
• Role-based workspace access (Admin, Member)
• View workspace members with overlapping avatars and hover tooltips

• Raw request body editor powered by Monaco Editor
• JSON pretty print & validation
• Copy to clipboard & auto-format options
• Persistent state management with Zustand
• Smooth and modern UI with shadcn/ui + TailwindCSS

• Framework: Next.js 15 (App Router, Server Actions)
• Language: TypeScript
• ORM & Database: Prisma + PostgreSQL
• State Management: Zustand
• API Caching/Fetching: TanStack Query
• UI Components: shadcn/ui + TailwindCSS
• Icons: Lucide-react
• Editor: Monaco Editor
• Auth: Better Auth
• Deployment: Vercel

git clone https://github.com/Aestheticsuraj234/postman-clone
cd postman-clone

npm install

Create a .env file in the root and add:

DATABASE_URL="postgresql://user:password@localhost:5432/postmanclone"
BETTER_AUTH_SECRET
BETTER_AUTH_URL=http://localhost:3000 

GITHUB_CLIENT_ID
GITHUB_CLIENT_SECRET

GOOGLE_CLIENT_ID
GOOGLE_CLIENT_SECRET

NEXT_PUBLIC_APP_URL

GOOGLE_GENERATIVE_AI_API_KEY

npx prisma migrate dev
npx prisma db seed   # if you have seeds

npm run dev

App will be available at: http://localhost:3000

/app
  /api             → API routes (REST & WebSocket server actions)
  /(workspace)     → Workspace-specific routes
  /invite          → Invite link pages
/components        → Reusable UI components
/modules           → Features (auth, invites, requests, websockets, etc.)
/lib               → Utilities (db, auth, store)

• Postman – for inspiring the core idea
• Next.js & Vercel – for providing a powerful fullstack framework
• shadcn/ui – for beautiful and accessible UI components
• TanStack Query & Zustand – for data and state management
• All open-source contributors & libraries used in this project 🙏

This project is MIT Licensed. Feel free to fork, contribute, and build your own features on top of it!