CollectFlow – Invoicing App Source Code - Sell Project

CollectFlow — Self-Hosted Invoicing & Payment Follow-Up App Complete source code for an invoicing and accounts receivable app built for freelancers, consultants, agencies and small service businesses. Manage clients, create invoices and estimates, track full and partial payments, spot overdue invoices and export professional PDFs, all from a workspace you host yourself. WHAT IT DOES • Clients, invoices and estimates with multiple line items, configurable tax label and rate, and six currencies (USD, GBP, EUR, CAD, AUD, AED) • Partial payments with a full payment history and automatic remaining balance • Smart statuses: late invoices are flagged Overdue even when partially paid, so nothing slips through • One-click conversion of a sent or accepted estimate into an invoice • Dashboard with outstanding balance, overdue total and a "needs your attention" list • PDF and CSV export, including Arabic text in PDFs • Optional SMTP payment reminders (sent manually) with a log of every attempt • A private, separate workspace for every account BUILT WITH Python 3.11+, Flask, SQLAlchemy, SQLite (PostgreSQL-ready), ReportLab, Docker and Docker Compose. Plain HTML, CSS and JavaScript, with no front-end build step. BUILT-IN SAFEGUARDS CSRF protection, hashed passwords, login throttling, security headers, strict input validation and Decimal-based money math. WHAT YOU RECEIVE Full source code, templates, assets and logo; Docker, Compose and Procfile configuration; start scripts for Windows and macOS/Linux; setup documentation in English and Arabic; and an automated test suite. No database, secrets or customer data, so you start from a clean slate. IDEAS FOR THE NEW OWNER • Launch it as a subscription invoicing SaaS • White-label it as an add-on for your agency clients • Build a Gulf-focused edition (AED, VAT, Arabic) • Add Stripe or PayPal checkout, recurring invoices, scheduled reminders or a client portal HONEST STATUS CollectFlow is an early-stage MVP, not an operating business: no customers, revenue or usage history. Not included: Stripe/PayPal, recurring invoices, scheduled reminders, a customer portal, team accounts, password reset and editing documents after creation. The PDF is a standard business document, not a certified e-invoicing format. No independent security audit has been done, so review security and privacy before handling real customer data. You receive the source code and files, not a customer base or domain.