Offline Dealer Management System for Vehicle Sales and CRMOffline Dealer Management System for Vehicle Sales and CRM
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Shipped a self-hosted Dealer Management System for a car dealership — inventory, CRM, sales, and installment payments, running entirely offline on one Windows PC in the dealership office. No cloud, no internet connection required to operate.
Covers the full vehicle lifecycle (lead → inspection → listing → reservation → sale → delivery) with an 8-stage CRM pipeline, a quotation → booking → payment → sale → delivery workflow that generates real PDF documents, and installment selling with auto-allocated oldest-due-first payments.
Locked down by 9 roles and ~45 server-side permissions, with an immutable audit log of every change. Built solo with Next.js, PostgreSQL, Prisma, and TanStack Query — replacing spreadsheets and paper registers with one system the whole floor works from.
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The network for creativity
Join 1.25M professional creatives like you
Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started