BranimirIvanov

Qr Code Adv generates automatically QR code of your current page or home page and displays it in your sidebar. After installing Qr Code Adv you have to go into wp-admin/widgets.php and drag and drop our plugin Qr Code Adv into your sidebar. Thats it!
There are few options for advanced users to customize QR code design (Qr Code color, background color, title etc)
For experienced QR code advertisers there is an option to input QR Code Raw Data that will allow you to make your code do anything you want (create sms, create email, call some number etc)

Qr Code Adv

Qr code widget plugin for your WordPress sidebar. Qr code Adv displays QR codes of your site or any other external URL

This widget allow you to display your contact information (or other such as sms to, email to, note, MEcard and etc) in qr code form.
This widget works by displaying a qrcode which was defined by blogger to put contact information. Get qr contact information format from http://qrgenerator.mindster.net This web site allow you to generate most contact information format such as ME card,telephone number,url,wifi access code, send sms, send email and etc.

EasyQR

This plug in allow you to display your contact information (or other) in QR Code form.Just drag the widget into suitable location and you're done …

Qr Code Adv vs EasyQR