Yes, we have three (3) QR code generating plugins. The functionality is almost the same. But there are some differences in design and some functionality
QR Code Composer Pro:
1) Basic QR code Design
2) its generate bulk vCard QR code from metbox with post type basis, see the demo
Master QR Generator:
1) Basic QR code with QR eye color around QR. Background image supported
2) Different logos can be added according to different post types.
3) The size of the QR code and the size of the QR dot will increase or decrease depending on the length of the content or URL. This means that the size of the QR code will not be the same for all QR codes. If you set the size to 300, you will get either 298 or 296 for the length of the content and 300 for either. see the demo
Quick QR code:
1) QR code dot has many shapes, QR code Design with many eye shapes & colors.
2) The first Gradient color supported QR dot, eye shape in WordPress. see the demo
3) its generate bulk vCard QR code from metbox with post type basis, see the demo