Lexara — a modern SaaS platform for task management

Lexara – a full-featured SaaS platform developed using a modern technology stack. The project demonstrates the creation of a scalable web application with an authentication system, subscription management, billing, and multilingual support.

Frontend
Next.js 15 - React framework with App Router
TypeScript - static typing
Tailwind CSS - modern CSS library
Radix UI – accessible UI components
React Hook Form - form management
Zod - schema validation

Backend
Next.js API Routes - server-side logic
NextAuth.js - authentication and authorization
Prisma ORM - database interaction
PostgreSQL – relational database
bcrypt - password hashing

Key features
1. Authentication system
- Registration via email with verification
- OAuth integration (Google, GitHub)
- Multi-factor authentication
- Management of multiple accounts
- Secure password storage with bcrypt
2. Profile management
- Editing personal information
- Uploading avatars
- Unique nicknames with auto-generation
- Email address verification
- Linking/unlinking social accounts
3. Subscription and billing system
- Multi-tier subscription plans (Personal, Pro, Team)
- Flexible limits system via JSON configuration
- Payment and transaction history
- Resource usage monitoring
- Ready for Stripe integration
4. Internationalization
- Support for multiple languages (EN, RU, UA)
- Interface localization and error message translation
- Adaptive user language detection
5. UI/UX design
- Modern design with dark theme
- Fully responsive interface
- Animations and transitions
- Loading states and feedback
- Accessibility (a11y) of components