samwilson

A simple financial bookkeeping journal for keeping track of personal expenses and income. 
This plugin gives you an extra top-level menu item in the WordPress administration back-end, 
under which you can enter payment and receipt data, view monthly summaries, and generate invoices.

Bookkeeping

A simple personal financial bookkeeping system.

codres

Personal QR message WP plugin.
This plugin allows the seller to create personalized messages for the buyer by a QR code technology. 
The seller can generate text, audio, video messages and send them directly via email or generate a pdf file with a QR code and include it in the order. 
Thanks to this solution, contact with the customer will become more personal and will allow your store to build a good reputation.

Personal QR Message

WordPress plugin to create a personal QR message for the buyer.

Bookkeeping vs Personal QR Message