Yes, there are several good free QR code generators that offer unlimited scans. Here are three popular options:

1. QR Code Generator (www.qr-code-generator.com):
This online tool allows you to create QR codes for various purposes such as URL, text, email, phone number, Wi-Fi, and more. It offers unlimited scans and provides a range of customization options including colors, shapes, and logo embedding. You can generate QR codes in different file formats such as PNG, SVG, and EPS. Here is an example of how to generate a QR code for a website URL using QR Code Generator:

- Go to www.qr-code-generator.com.
- Select "Website URL" as the type of QR code.
- Enter the URL of the website you want to create a QR code for.
- Customize the design if desired.
- Click on the "Generate" button.
- The QR code will be generated, and you can download it in your preferred format.

2. QR Stuff (www.qrstuff.com):
QR Stuff is another popular QR code generator that offers unlimited scans. It supports various QR code types including URL, text, email, SMS, and more. In addition to customization options, it also provides advanced features like QR code analytics. You can create QR codes in different colors, sizes, and formats. Here is an example of how to generate a QR code for a text message using QR Stuff:

- Visit www.qrstuff.com.
- Choose "SMS Text Message" as the QR code type.
- Enter the recipient's phone number and the text message content.
- Customize the design if desired.
- Click on the "Download QR Code" button.
- The QR code will be generated, and you can save it to your device.

3. QRCode Monkey (www.qrcode-monkey.com):
QRCode Monkey is a versatile QR code generator that offers unlimited scans. It supports various QR code types including URL, text, email, phone number, and more. It provides customization options such as colors, shapes, and logo embedding. You can download the generated QR codes in different file formats like PNG, SVG, and PDF. Here is an example of how to generate a QR code for an email address using QRCode Monkey:

- Go to www.qrcode-monkey.com.
- Select "Email" as the QR code type.
- Enter the recipient's email address, subject, and body.
- Customize the design if desired.
- Click on the "Create QR Code" button.
- The QR code will be generated, and you can download it in your preferred format.

Remember to check the terms and conditions of each QR code generator to ensure that unlimited scans are indeed offered for free.