Single License

Package includes: PHP & Perl versions.
Limitations of using: One installation on a single website, process unlimited number of web forms. Installing the product on websites other than owned by a licensee or reselling is strictly prohibited.
Description: Use Single License to process web forms on one (1) website. Recommended for private, and small business use.  

Business License

Package includes: PHP & Perl versions.
Limitations of using: Up to 10 websites and unlimited number of forms in total. Installing the product on websites other than owned by a licensee or reselling is strictly prohibited.
Description: Use Business License to process forms on up to 10 different websites owned by a licensee company.
Example: A company with multiple product websites.  

World Wide License

Package includes: PHP & Perl versions.
Limitations of using: The license allows you to install the script on unlimited number of websites owned by a licensee company. No limitations on number of web forms. Installing the product on websites other than owned by a licensee or reselling is strictly prohibited.
Description: Use World Wide License to process forms for multiple websites within one company.
Example: A company with more than 10 websites.  

ISP License

Package includes: PHP & Perl versions.
Limitations of using: Under this license, one may install the script to unlimited number of websites. The license also allows installing the script to websites owned by clients of the licensee company. Product reselling is strictly prohibited.
Description: This license is primarily designed for webmasters and web-design/web development companies, who intend to install the product on their clients' websites. Great business opportunity!