Meridian

Meridian is warehouse and inventory software for Windows with CRM elements. One program covers a shop, a warehouse or a service centre: goods and stock, receipts and sales, a scanner-driven cash desk, discounts and loyalty cards, customers, documents, tasks, mail and telephony. It is installed from an MSI and runs on your own PostgreSQL server; seats are bought once and stay yours.
Warehouse: warehouses and storage places, product cards with groups, barcodes, images and kits, receipts, transfers, returns, stock and turnover reports.
Sales and documents: sale documents with lines, posting that moves stock, invoices with payment state, labour and services sold alongside goods.
Cash desk: retail sale from a barcode scanner without a single pop-up window; F-keys for cash, card, quantity and closing; receipt printing scripted in Python.
Discounts and loyalty: loyalty cards tied to a phone number, levels by turnover, bonuses, coupons and promo codes, tiered and time-limited promotions - one rule table, one engine.
Car service and spare parts: the customer's garage, part lookup by vehicle from stock and from the catalogue, cross-references and analogues.
Clients, tasks, mail and telephony: counterparties and contacts, employees and 13 ready-made roles, tasks with reminders, a built-in SMTP/IMAP mail client and SIP telephony next to the client card.
Free for 10 seats, forever. 25 seats USD 159, 50 seats USD 299, 100 seats USD 529, one-time.
Requirements: Windows 10/11 64-bit, PostgreSQL 12 or newer (a database kit is available on the website). Interface in English and Russian.