01
Overview
A full-stack invoice and quotation management system built for freelancers, agencies, and small teams who need a self-hosted billing solution with enterprise-grade features.
Built as a TypeScript monorepo with React + Vite frontend, Express + Prisma backend, and shared Zod validation schemas, delivering a type-safe and scalable billing platform.
02
Key Features
- ▹Complete billing workflow with invoice CRUD, quotation management, customer portal, service catalog, and payment tracking — all in one unified dashboard.
- ▹Automated PDF generation and delivery using PDFKit with 30-minute caching system. Send invoices and quotations via email and WhatsApp with one click.
- ▹Smart notification scheduler that runs daily background checks for due reminders and overdue alerts, with multi-channel delivery through email and WhatsApp Graph API.
- ▹Role-based access control with JWT authentication using HTTP-only cookies and Authorization header fallback. Admin and User roles for secure operations.
- ▹Revenue analytics dashboard with ApexCharts visualization for total revenue, outstanding payments, invoice status distribution, and payment method breakdown.
- ▹Auto-overdue detection that automatically updates invoice statuses based on due dates, eliminating manual tracking and ensuring accurate financial records.
- ▹Quote-to-invoice conversion with one-click workflow — approved quotations carry over all line items automatically, reducing double data entry.
- ▹Type-safe architecture with shared Zod schemas across frontend and backend, ensuring 58+ validated API endpoints with consistent data contracts.
- ▹Advanced search and filtering across 10 Prisma models with cmdk command palette (Ctrl+K) for instant navigation and quick actions.
- ▹Self-hosted deployment with npm workspaces monorepo, supporting 17+ frontend routes and complete customization for your business needs.
05
Tech Stack
