Example of how Javascrpt and PHP can work together to provide simple and extensible email form validation. Use this as a starting point for more complex server-side validation without screen refresh.

"The Email Validation Component is a true native, 100% managed C# component that can be implemented for both Webform and Winform."

Email Validation Component does:
1. An accurate syntax check
2. A domain check by looking up MX records
3. A username test using SMTP

We've packed a full set of solid, professional networking code into a simple component. With only one method call.

Provides easy-to-use, self-wiring text validation for your Windows Forms controls. When dropped onto a Form, a validation criterion that can be configured entirely visually (through dialog boxes or the Properties window) is added to each data input component. Values contained in these components are then automatically validated at runtime. Also features fully customizable error messages

HTML_QuickForm is a part of PEAR. It is a great package, but you need a lot of coding to create PHP forms with complex structure and validation logic. Instead of writing PHP form code manually, you can create the same code in minutes, using the visual editor. The program generates PHP code from a tree-like structure of the form fields and validation rules.

The software is designed for those who want to verify the validation of a certain Credit Card. The software needs an Internet connection, so it can connect to the remote servers and send them the request of validation. Up to now, 4 majors card types are supported, they are VISA, MasterCard, American Express and Diner Club International.

Free XHTML Reference with example XHTML document and self validation code. Single page to easily hang on your cube wall.

SV Bookmark is a visual bookmark manager that allows you to associate screenshots of a web site with each entry. Hovering your mouse over an entry displays a small popup screenshot of the site, making it easy to remember the content. The program provides advanced features such as thumbnails and full-size screenshots, searching, duplicate checking, URL validation, password protection and more.

MailBee SMTP is a powerful and easy to use COM object which enables ASP and Windows applications to create, send and queue mail to SMTP servers. Secure authentication, email validation, correct MIME composer, multiple attachments, and much more. Can be used in conjunction with SSL, POP3 and IMAP4 components. Royalty-free distribution.

FREE Graphical XSD and XML Editor. A fully featured XML Development Studio, including; Graphical and Text based XML Schema Editor with Validation, XML Editor with Syntax Highlighting, Validation and Intellisense. XML Formatting, Features you usually find in products costing over $$$

Create powerful HTML email workflow applications. WickedByte Software's CurveMail component is designed especially to support HTML email workflow. CurveMail supplants the System.Net.Mail namespace and provides missing features such as address validation, S/MIME encryption, iCalendar, and URL rewriting. Use a single API to manage the complete email workflow process, from initial creative design to tracking customer responses.