If you are starting with a small shop and need a quick billing software you can
use HDPOS easy. HDPOS easy gives you ability to create invoice, manage stock
of one location and handles your accounting. You can accept payments from your customers
as cash and card in this product.
This is full functionality software download. Register it for free
and get a trial license key for 10 days.
Please note: if you are running Windows XP and facing problems with application
installation, most likely you need .Net framework 3.5 runtime.
See  System Requirement
section for details.