Siam Hossain Websites · Private
07 / case study

Websites.

Free web tools I built for friends running real businesses. Both are live and password-protected because they hold actual business data — so these are screen previews and the story behind each build, not public links.

— Project 01 · internal tool

Stock Audit Tool

Search a product, set price & quantity — it writes straight to Google Sheets.

The problem

A friend needed to run quick stock audits in his shop — pull up a product, set its price and quantity — without paying for inventory software or maintaining a database. He already lived in a Google Sheet.

What I built

A fast search-as-you-type product finder. For each item you set a price and quantity, and every change is pushed straight into the Google Sheet he already uses — the spreadsheet IS the backend. No database to run, nothing new to learn.

Why it matters

Zero cost, zero maintenance. He keeps working in a tool he trusts; the app just makes data entry fast and error-free. It's behind a password gate because it edits live business data.

Role
Solo build
design → ship
Storage
Google Sheets API
no separate DB
Stack
Web app (React)
Vercel
Status
● live
password-gated
Stock Audit Tool — product search and entry
Screenshot coming soon
Stock Audit Tool — Google Sheets sync
Screenshot coming soon

Live tool is password-protected — previews shown instead of a public link to protect the owner's business data.

— Project 02 · saas-style tool

Invoice Generator + Dashboard

Professional invoices for many businesses — with a dashboard, completely free.

The problem

A friend runs several businesses and was paying for fragmented invoicing tools — one per business, each with a subscription. He wanted one place to issue invoices and see them at a glance.

What I built

A free invoice generator that produces clean, professional invoices, plus a dashboard to create, view and track them across all of his businesses in one account — no subscription, no per-business lock-in.

Why it matters

One free home for multi-business invoicing. Deployed privately because it holds real client and financial data — access is protected rather than public.

Role
Solo build
design → ship
Built for
Multi-business
owner
Stack
Web app
Vercel
Status
● live
access-protected
Invoice Generator — invoice builder
Screenshot coming soon
Invoice Generator — multi-business dashboard
Screenshot coming soon

Live tool is access-protected — previews shown instead of a public link to protect client and financial data.

© 2026 siam hossain · websites / private builds
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