JavaScript Authentication Libraries
Libraries for JavaScript
GitHub Star Comparison
| No | Name | GitHub Stars | Description | Trend | License | Type | Official Site |
|---|---|---|---|---|---|---|---|
| 1 | Auth.js (NextAuth.js v5) | ⭐ 27.7k | Runtime-agnostic modern authentication library. Supports OAuth, Magic Links, and Credentials across diverse frameworks including Next.js, SvelteKit, and Solid | Most notable JavaScript authentication library in 2025. Rapidly growing with major renewal from NextAuth.js v5 | ISC | OAuth/Magic Links/Credentials | Official |
| 2 | Passport.js | ⭐ 23.4k | Extremely flexible and modular authentication middleware for Node.js. Supports wide range of authentication methods with 500+ strategies | Continuous stable position as the standard for Node.js authentication. Strong popularity due to high reliability in enterprise systems | MIT | Strategy-based Authentication | Official |
| 3 | Lucia Auth | ⭐ 10.4k | Lightweight open-source authentication library. Simplifies session handling implementation with easy database integration | Emerging library gaining attention in 2025. Rapidly rising evaluation in developer community for balance of simplicity and flexibility | MIT | Session-based Authentication | Official |
| 4 | Firebase Authentication | ⭐ 5.0k | Google's cloud authentication service. Easy integration of password, phone number, and social provider authentication | Rapid adoption in full-stack development. Popular among startups and individual developers, continuing growth in 2025 | Commercial | Backend-as-a-Service | Official |
| 5 | Auth0 SDK | ⭐ 1.0k | Official JavaScript SDK for Auth0. Comprehensive enterprise authentication service with SSO, MFA, and user management features | Stable position as representative enterprise authentication solution. Continued demand due to stricter security requirements | MIT | Enterprise Auth Service | Official |
| 6 | Supabase Auth | ⭐ 429 | Open-source Firebase alternative service. User management system integrating JWT authentication, MFA, and social login | Rapid growth with open-source focused trend. New option gaining corporate attention as Firebase alternative | Apache-2.0 | Authentication Service | Official |
| 7 | jsonwebtoken | - | JWT implementation library for Node.js. Provides token generation, verification, and decoding through simple API | Widely adopted as standard JWT implementation. Continuing growth with increased usage in microservices architecture | MIT | JWT Token | Official |