1. Passport.js
2. bcrypt
3. jsonwebtoken (for generating and verifying JWT tokens)
4. express-session (for session-based authentication)
5. cors (for handling Cross-Origin Resource Sharing)
6. cookie-parser (for parsing cookies)
1. Multer
2. Express Fileupload
3. Formidable
4. Cloudinary
5. AWS SDK for JavaScript (AWS SDK)
6. Firebase Storage
7. GridFS
1. Heroku
2. Netlify
3. Vercel
4. AWS
5. DigitalOcean
1. GitHub
2. GitLab
3. Bitbucket
4.SourceForge
5. Codeberg