Nothing here is an add-on or a separate licence. Every module below is part of the product, and they all write to the same set of books.
The screen your cashiers live in. Designed to be fast with a scanner, usable with a touchscreen, and safe to hand to a new hire.

One live picture of what you hold, per branch, with the controls that keep it honest.

The full buying cycle, from the order you place to the credit note you claim back.

A catalogue that stays tidy as it grows past a few thousand lines.

Trading partners with real accounts behind them, not just a name on an invoice.

Proper double-entry accounting underneath the day-to-day, not a spreadsheet bolted on afterwards.

The numbers you act on, and the controls that decide who may act.

Reading a feature list only gets you so far. Open the live demo and click through the modules yourself.