



Professional link checker. Checks unlimited number of pages and links. Very fast, fully automated, multi-threaded, with a link-following web spider that reports on all tested links. Checks favorites, Internet shortcuts, lists, etc.
CSE HTML Validator Professional is a fast, powerful, user configurable, and easy to use professional web development tool that helps you create syntactically correct and accessible HTML, XHTML, and CSS. Can automatically fix HTML. Also checks links.
CSE HTML Validator Lite is a fast, easy to use, and FREE (for personal and educational use) HTML development tool for Microsoft Windows that helps you create problem-free HTML and XHTML documents. It's also a great learning tool.
Performs four important validations on your web pages: True (X)HTML validation against published DTDs; accessibility validation against the W3C and US Section 508 guidelines; spell checking against one of five languages; and checking for broken links

Total Validator Tool for OSX
$0 - Total Validator
Why use separate validation tools to check your web pages when you only need one?
The Total Validator Tool performs the most important validations on your web pages: True (X)HTML validation against published W3C/ISO DTDs; accessibility validation against the W3C and US Section 508 guidelines; spell checking against one of five languages; and testing for broken links.
Why these 4 validations ...
Search engine robots/spiders are very fussy and will not search or index some or all of a site if they come across invalid HTML. So if you want to be properly listed you need to be sure your HTML is valid.
Just because you can use your website doesn't mean that someone with a disability can. You should ensure your sites conform to the W3C WAI Accessibility Guidelines, (and that also means strictly W3C validated HTML), or US Section 508 standard, if you want your site to be accessible to all.
Spelling is often left unchecked and will make your site look and feel unprofessional and even unusable.
Broken links are the bane of every webmaster, you may get your internal links correct, but external sites tend to change all the time, and there's nothing that makes your site look worse than a link to nowhere. So you need to regularly check your site for broken links.
If you need more than the this tool provides then keep a look out for the full version that allows you to test more than a page at a time, has more options for each validation and can be optionally run from the command line.

Web Link Validator
$95 - REL Software
Web Link Validator is a powerful, comprehensive site management and link checker tool that helps webmasters automate the process of web site testing. The software performs a thorough analysis of Web site pages and includes the following checks: finds broken links (including those using JavaScript and Flash), orphaned files, HTML coding and spelling errors, slow-loading, outdated and small-sized pages. The program can access HTTPS resources and password-protected pages. It will operate via a proxy server, if required. Reports on checked pages are presented in a clear, easy-to-read HTML format. The powerful system of filters allows in-depth research of any problems that are revealed. Other Web Link Validator features include the ability to check a copy of a Web site saved on a local hard drive, individual settings for each site, automatic e-mailing of the site reports, an alternative Internet Explorer-based verification engine and a customizable program interface. Web Link Validator is an essential solution for site administrators, web developers, e-businessmen and anyone else who wants to maintain the quality of their web sites. It will improve your potential customer's website experience by keeping track of broken links and checking the accuracy of your HTML code.

LinxExplorer
$39.95 - NOVOSIB Software Co.
LinxExplorer is a link validation tool that enables you to check and validate web sites and local HTML files to find broken links. It checks internal and optionally external links relative to the starting URL and presents the results in real-time. The results can be filtered and exported to HTML or text format. Report can be displayed in the integrated text viewer or external program associated with text or HTML files. You can open and edit multiple local HTML and text files. LinxExplorer logs and displays all protocol specific data exchanged with Web server. Program has built-in color text and image viewer. You can examine downloaded images, ASCII text and HTML files. LinxExplorer supports several Internet protocols: HTTP, HTTPS and FTP. In addition, It supports following proxies: SOCKS4, SOCKS5, HTTP and HTTP tunneling (HTTP CONNECT). Program operates under Microsoft Windows 95/98/Me/NT4.0/2000/XP/2003. Its interface is very easy to use and has multi-document style. You can create many validation and transfer tasks and easily switch between them. While program processes task, it displays checked link tree and link processing statistic. Integrated transfer manager enables to download any file from the Web. Orphan files detection is supported on checking local HTML files and folders.

UltraEdit-32
$49.95 - IDM Computer Solutions, Inc.
Powerful Text, HEX, HTML, PHP and Programmer's Editor. Suitable for general text editing, programmer's, web designers, binary editing, email, and all your editing needs. Key Features include: Disk based editing for files even greater than 4GB! 100,000 word spell checker, with foreign language support - supports spell check as you type. Syntax Highlighting/Coloring for many languages including C/C++, HTML, VB, Java, Perl, ASP and more. Nested comments supported for syntax highlighting. Code Folding, Brace Matching, CTags Support, CSE HTML Validator Integration, Integrated Scripting support, Integrated IE Browser support to show active HTML file, Configurable tool support allowing running of compliers, linkers etc. from within UltraEdit. Configurable toolbars and menus. Project/Workspace support. Optional automatic reload of last files open. Dockable function list shows functions in the file or project. SFTP and FTP client built in with support for muliple accounts and proxy servers. SSH/Telnet client built in with support for multiple accounts. Hexadecimal/binary editing including find/replace . Configurable Key mapping, Column/Block mode editing, Insert of string, or numbers for each column, Support for UNICODE, Multi-byte and UTF-8 UNIX/MAC/DOS file support and conversions. Favorite files/folders list, Text formatting, alignment and centering. Print/print preview including Syntax Highlighting. Find/Replace in Files, Auto-correction and auto-completion , Macro recording, playback and editing. Macros include if/else statements and loops. Templates, ANSI/OEM conversions, Tab/Space conversions, Conversion to upper/lower case or capitalize, File sort, Word-wrap support, Multiple clipboard support, Auto-save and backup file support, Always-on-top option, Minimize to system tray option, ASCII file compare, Integrated HTML Tidy, Full screen mode, Bookmarks. As UltraEdit is disk based, it allows editing of files even over 4GB without using large amounts of RAM.

Traffic Geek
$179 - Software Store Products
Search Engine submission software to submit your websites to more than 900,000 search engines, directories and link pages including Google, Yahoo and Dmoz. The software includes more than 20 SEO tools such as link popularity, keyword builder, html validator, website ranking and the ability to add your own search engine databases.
A free external scheduler that is included allows you to configure how often and when to automatically submit your web pages to the different directories. The reporting system that allows you to customize and email submission reports makes this product perfect for someone that wants to start a website submission service.
New search engines are added monthly and it is free to download the search engine updates.

RankQuest Free SEO Toolbar
$0 - RankQuest
The RankQuest SEO Toolbar provides you quick access to more than 30 intuitive Search Engine Optimization tools.Once you download and install the Toolbar you are only one or two clicks away from carrying out most of your day to day SEO operations. RankQuest WatchRank - Track your keyword performance is a free SEO tool served along with toolbar. A partial list of tools that the toolbar provides access to include Keyword Finder,Code Cleaner,Keyword Density Analyzer,HTML Validator,Meta Tag Analyzer,Meta Tag Generator,Lynx View,Keyword Density Compare,Link Explorer,Combo Result Viewer,Server Header Checker,Text Ratio,Link Checker,Link Popularity,Search Engine Saturation,Alexa Rank Comparison,Google search Tool,Yahoo Search tool,MSN search Tool,Adword Generator. Other than the above mentioned tools the toolbar also provides access to 10 other important SEO Tools. It also has links to important SEO Forums. It also has option to search Search Engines, Blogs and Bookmarks. RankQuest SEO Toolbar is widely used for all SEO tasks and is the most preferred toolbar for Search Engine Optimization.
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