We currently cover 147 million domains, 92.8 million of which are .com, the most popular TLD on the internet, 13.7 million are .net, 8.8 million are .org’s, 7.7 million are .info’s. Then there’s the rest of the web which make up the additional 25 million domains we track.

Domain Coverage

Our domain coverage is continually increasing (it went from 10k to 147 million in 2 years) to bring you the best trends and technology usage coverage available on the web today.

If you want a list of all of the totals for the TLD’s we cover don’t hesitate to contact us.

You can use Technology Analysis to find breakout competitors, potential acquisitions and poor performing technologies with customers looking to go elsewhere. Just a few ideas for the usage of this powerful pro user tool.

Checkout BuiltWith TrendsPro and see if it’s the right tool for you and your business.

Eric Eldon’s blog post on techcrunch.com – explains what BuiltWith does -

And we also did an interview with Alex Hawke from DoesWhat, a fantastic website that does interview with tech founders and CEOS -

Here’s their infographic, click on it to see the full version published on Mashable.com.

Thanks ShareSquare for using BuiltWith and putting our logo in the infographic!

Andrew no longer had time to maintain the site and we wanted to keep it going. It received some fantastic praise when it was first released and today it will continue to provide web technology lookups in the same manner as BuiltWith does today.

We’ve extended the technology coverage of UnderTheSite by using our own technology lookup database, which now has over 2500 technologies implemented.

This new information provides an insight into where users are going with their technology, so as well as being able to see from the trends how much a web technology is being used, you’ll now be able to get an idea of where they came from. For example, Joomla! users are migrating to WordPress. The pie chart gives a representation of how many  are doing this, as you’ll also notice some users are migrating to Joomla! from WordPress!

We plan to expand this information to cover more of our technologies in the future.

The new TrendsPro subscription offering is a monthly fixed price option that lets you do research on your terms and not of your marketing/sales budget. You can create up to 120 different technology reports per year, get weekly updates on them, filter them as necessary and even integrate them with your Salesforce CRM.

We’ve got backups of data that go back to January 2011, so we can provide a historical report for any of the top sites back to this time. You can use this information to find leads that you might have missed out on or fill gaps in your technology research.

You can filter your result set by almost any combination of information you can think of. For example, do you want leads for customers using a particular hosting provider? Or websites that are only located in United States? Or maybe you only want to target websites which end in .com.

Checkout the new TrendsPro and sign up for a free account.

The Dev Environment

Having spent the best part of my career building Microsoft C# based applications, the majority of BuiltWith backend is C#, it makes sense for us to use this language over the latest and greatest open source alternative simply because of the understanding of the C# language and the ability to get new production quality features available to you!

Having made Scott Hanselman’s 2011 Ultimate Developer and Power Tools list (thanks Scott) here’s our own mini list of what BuiltWith uses -

Environments

Windows 7 – Used for development

Windows Server 2008 R2 – Used for deployment

Developer Tools

Microsoft Visual Studio 2010 – The majority of application development time is spent using this tool.

Microsoft SQL Server Management Studio – Used for managing the SQL Server databases.

SciTE – Super fast bare-bones text editor with language colour support.

Paint Shop Pro 6 – Very old but quick and easy tool for cropping and resizing images

Google Chrome – Main development browser using the built-in developer tools

FileZilla – For deployment

Debugging and Performance Tools

jetBrains DotTrace – Line by line C# call performance monitor, very very useful.

MvcMiniProfiler – We use this on new projects, it’s an in-line DotTrace where you define the calls to monitor.

Protocol Buffers C# Port – A fast way of moving data around.

Microsoft SQL Server Profiler – Profiling tool to determine what’s going on with our SQL statements.

Microsoft Database Tuning Advisor – Takes the hard work out of performance tuning our database instances.

Google Chrome – Again the built-in tools are awesome for performance monitoring and auditing page speed

Yahoo YUI Compressor – Makes all our JavaScript and CSS files nice and tiny.

Libraries

jQuery – Who’s not using this? We use a variety of plugins like FancyBox, Validate, AutoComplete, Tipsy, UI and Tmpl to name a few.

Cufon – Nice anti-aliased fonts on all browsers

Head JS – Parallel JavaScript

Modernizr – Makes everything new again

Infrastructure

BuiltWith’s dedicated servers all run on 100% carbon dioxide free hydro energy sources. Our setup is currently two dedicated web servers and a single dedicated database server all with plenty of RAM.

The development PC is a reasonable new home-built workstation with 6 gigs of ram, two 27″ monitors and a MacBook Pro 15″ dual boot with Windows 7 when not at the workstation.

Would love to hear from you if there’s a tool that you think I should be using.

Introduction

jQuery is the most popular javascript library in use on the web today. Its growth has increased on a monthly basis since 2008 based on our  tracking. Today, jQuery is in use on more than 50% of the top 10,000 sites on the Internet and on 30% of the top million¹.

jQuery History

John Resig launched jQuery on approximately the 16th January 2006 – John wrote on his blog – “Making it to both del.icio.us popular and the front page of digg just shows how badly Javascript programmers want a better library for writing code with.”²

Just over a week later Michael Geary had written the first third-party jQuery plugin, a JSON manipulation function which would later be added to the main jQuery library.

Version 1.0 of jQuery was released on August 26th 2006 and since then there have been 33 increment releases, with the current version at 1.6.4, released on September 12th, 2011.

Trends

BuiltWith.com has been compiling weekly trends of website technology usage since 2008. The following chart shows jQuery usage in the top 10k sites on the Internet -

jQuery Usage in the Top 10k Sites since December 2008

jQuery Version Usage

In the top million sites as provided by Quantcast, 311,654 sites report using jQuery, 60% of those use 5 different versions of the jQuery library.

Top 5 Versions of jQuery in use in the Top Million Sites

Version 1.4.2 is the most popular version of jQuery in use, shortly followed by version 1.3.2. The release cycle of jQuery is typically quite short, ranging from a few days (bad build fixes) to a few months. Version 1.3.2 was the stable version of jQuery until 1.4 was released  11 months later. Version 1.4.2 was also the latest released version for 8 months. The amount of time these were the latest versions of jQuery may be a contributing factor in their increased usage.

291 sites out of the top million reported using version 1.6.4 which was available 7 days after the report was generated.

jQuery Version Changes over 2011 (large version)

The area chart above shows the changes in version usage since January 2011 to October 2011 in the top million sites. It shows how version 1.3.2 and 1.4.2 are being replaced by more fragmented versions of jQuery versions 1.4.3 and above.

Popular jQuery Plugins

jQuery plugins provide additional functionality off the back of the jQuery library. Plugins build on jQuery functionality to provide many different functionality aspects, such as widgets, validation, fixes for older browsers and many more functions.

Popularity of the Top 10 jQuery Plugins in the top million sites³

jQuery UI is the most popular plugin for jQuery. Developed by the jQuery team, it extends jQuery by providing tabs, sliders, calendars many other widgets and a themeing framework.

Mike Alsup’s Cycle plugin, the slideshow plugin, is the second most popular jQuery plugin followed by the Form plugin developed by the same author.

Conclusion

BuiltWith found over twenty thousand different jQuery related files used in the top million sites showing jQuery has a very active third party developer following.

jQuery is helping to shape the next generation of websites. As web sites move into HTML5, CSS3 development and uptake of modern web browsers such as Google Chrome, Firefox and IE9 continues, jQuery is an indispensable tool and is the de facto tool for website development.

Methodology

The research for this report was carried out by looking for jQuery related javascript files embedded into the homepage of the top million sites. jQuery related files were any which contained the word jquery. From those, if a version number could not be detected in the filename (such as jquery.js) the file was then downloaded to find the version number in the javascript file itself. The historical JQuery usage chart is based on version numbers in JQuery file names only.

The coverage does not include sites which embed jQuery in files which are not named jQuery and also only reported entries where the version number could be identified.

The plugin detection was found in a similar way, this report does not cover any jQuery extensions that do not use the word jQuery in the filename.

References

1. jQuery Usage Statistics
http://trends.builtwith.com/javascript/jQuery

2. John Resig – Announcing the jQuery Blog
http://blog.jquery.com/2006/01/24/jquery-blog/

3. Quantcast Top Sites
http://www.quantcast.com/top-sites-1

4. JavaScript Usage Statistics
http://trends.builtwith.com/javascript

There are other traffic reporting companies that make their top million sites available, such as Alexa and Google go as far as making the top 1000 available based on their AdPlanner data.

Some people prefer Alexa’s top sites, others prefer Quantcast. We merged the Quantcast Top Million and the Alexa Top Million hoping to find most of the sites the same, the results were unexpected as the overlap was only around 400,000 sites. So from today, website lists will be offered in two varieties “Top Sites” and “Rest of Web”. Top Sites is an amalgamation of Alexa/Quantcast and some other sources of websites that make up the Internet’s top sites. This makes up a list of about 1.8 million unique websites we now track every week (we also track another 128 million less often).

The trends charts on BuiltWith Trends will still use the original Quantcast data as the million URLs in this list is a large enough dataset to provide an accurate trend of web technology usage on the Internet today.