Web Development

This batch W3C validator tool is perfect to find out HTML errors on websites and check the markup validity of URLs in HTML, XHTML or HTML5. Using a HTML validator tool like this one can save you time and money and is good for SEO purposes also.

Detect IP addresses which are used as VPN anonymizer, open proxies, web proxies and Tor exits. The database includes records for all public IPv4 addresses.

100% free and without ads, openElement is a complete web authoring solution for creative professionals. Save time using well-coded, adaptable elements. Publish W3C-compliant, SEO-friendly websites that are compatible across all browsers and devices.

Create responsive, searchable, and accessible slideshows. Use custom animations and transitions to increase engagement and support interactions. Content sliders are the new hipsters and for good reason. They're soo gonna click that button.

With Web Calendar, creating a comprehensive calendar of events for your website is a pleasure. It's as easy as jotting a note in your personal planner, and as helpful for your visitors as hand-delivering a copy of your schedule.

The HTML Editor now supports HTML5 and CSS3. With this and other great tools like code completion, a comprehensive tag reference, built-in validation, and vibrant website themes you can create gorgeous, standards-compliant sites.

Sonar goes deep - really deep - into a website and transmits back a comprehensive overview with instant data on your sites performance.

Web Editor is a clever coding machine with the most flexible workspace you've ever seen. Two on-screen code editors and an interactive preview pane keep everything in view while you get to work with a wide variety of slick tricks.

Create stunning website designs that look fantastic and are easy to use on any device. No layout or template limitations. No code. Responsive Site Designer is 100% design freedom.

Rankaware is an SEO tool that makes keyword rank checking and monitoring fast and easy. This keyword rank checker software performs batch SERP position checking for targeted keywords on Google, Yahoo, Bing and tracks ranking performance over time.