The Tuition Management System optimizes online tutoring with automated session scheduling, billing, and report card generation. It simplifies tasks for tutors, offering a user-friendly dashboard and efficient modules for student management, billing, and scheduling.

⚡ PayLoop - Subscription management platform with automated workflows, multi-currency support, JWT authentication, and Arcjet security.

Free and open source Invoice-System-In-PHP

Automatic bKash, Nagad, Rocket & uPay payment verification via SMS detection. Android app that parses incoming payment messages and forwards transaction data (TrxID, amount, sender, balance) to your server in real-time. No root, no PC, no extra setup.

Django-based Billing & Inventory System for SMEs — automates billing, stock, and payments with real-time analytics and PDF invoice generation.

A node-based bill calendar, no longer under development. New version is VueJS

Simple and efficient mobile app to manage hotel/mess meal subscriptions, clients, and payments. Built with React Native & SQLite.

影记 — 自动记录支付宝/微信支付账单，无需手动输入 | Auto-track expenses from Alipay & WeChat Pay, no manual entry needed

📊 FreeLance Compass (FLC) - Modern project management system for freelancers. Track projects, payments, and deadlines with style using Python and CustomTkinter.

A MySQL-based freelancer project and payment tracking database system.

Multi-property rental management with payment tracking, tenant details, and revenue analytics dashboard

PrimeCapital is a full-stack GST Invoice & Business Management System built with React, Node.js, Express, and MongoDB. Features include GST billing, customer management, payment tracking, analytics dashboards, PDF invoice generation, WhatsApp sharing, JWT authentication, and business reporting.

Order management system for print shops — track jobs (wedding cards, receipt books, certificates & more), manage advance payments, monitor order status, and search/filter orders. Built with React, Tailwind CSS & Vite.

See every court, book every session, and track payments from one lightweight desk — built for solo racket-sport operators.

A lightweight storefront and payment-proof order tracker for small businesses, deployed on Zo Computer.

This program calculates the interest incurred on a credit card for a billing cycle based on user inputs. It takes the net balance, payment amount, days in the billing cycle, and interest rate to compute the average daily balance and interest incurred. Ideal for managing and tracking credit card interest effectively.

HydroManager is a lightweight full-stack Python application for managing pool service operations. It provides a Flask-based dashboard to manage clients, track service visits, monitor payments, and generate professional PDF invoices. The system uses an Excel-based backend for simple and accessible data storage, making it suitable for small to medium

A simple yet effective payment tracking system built with Python and Tkinter, featuring Excel integration, data analysis, and visualization.

Amkadamiyya School Fee Management System – A modern, production-ready React + Laravel for school fee collection, payment tracking, and financial reporting. Replaces manual spreadsheets with an intuitive dashboard, real-time balance updates, debtors tracking, and role-based access for administrators, accountants, and directors.