TienChen Invoice
Released Open Source Other Resources V1.0.0 August 2026
A fully offline sales-list editor — a single HTML file, double-click to run, data stored locally in the browser.
What it is
A fully offline sales-list tool for wholesale and retail shop owners: the whole app is one HTML file — download it, double-click, and use it. All data lives in the browser’s IndexedDB. No network, no upload, no installation.
Key features: customer management, product catalog, invoice editing with history, receipt printing, plus backup export/import.
Technical notes
Single-file HTML + vanilla JavaScript + IndexedDB. Zero build step, zero backend. This is a VibeCoding practice project.