Billy is an OpenSource billing system which can be self hosted on your WordPress website. It makes use of standard Gutenberg Block Editor components with a simple editing experience, decreases the learning curve and reduces the employee onboarding time.
The Free version can be installed from the WordPress Plugin Directory.
The Pro version is an add-on with additional features like Contacts management (CRM), QR code payments and billing stats.
You can find all relevant information and screenshots in the WordPress Plugin Directory.
Below are some screenshots of features that are only available in the premium add-on.
For demonstration purposes the TwentyTwenty WordPress theme has been used but the plugin also works with any modern theme that supports the WordPress Block editor.