World Wide Web Consortium (W3C) P3P Validator (Popularity:  )
(Score: 14.16)
This P3P Validator is compatible with P3P spec from Sep 15, 2000 to Sep 28, 2001. Test you implementation's compliancy and be alerted to errors.
Category:
Main\Computers\Security\Internet\Privacy
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CSE HTML Validator (Popularity: )
(Score: 12.84)
Windows. HTML, XHTML, and CSS validator. Also checks accessibility, links, and spelling. Commercial pro version and free lite version.
Category:
Main\Computers\Software\Internet\Authoring
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RSS1.0 Validator (ldodds.com) (Popularity: )
(Score: 12.69)
An experimental online RSS1.0 Validator
Category:
Main\Reference\Libraries\Library and Information Science\Technical Services
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CSE HTML Validator Lite (Popularity: )
(Score: 12.32)
Simple HTML editor with built-in HTML validator, syntax checker and spell checker. [Windows]
Category:
Main\Computers\Software\Freeware\Editors
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Feed Validator for Atom and RSS (Popularity: )
(Score: 12.23)
This is a validator for syndicated feeds. It works with RSS 0.90, 0.91, 0.92, 0.93, 0.94, 1.0, and 2.0. It also validates Atom feeds.
Category:
Main\Reference\Libraries\Library and Information Science\Technical Services
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Userland RSS validator (Popularity: )
(Score: 12.17)
Userland Software's online validator for RSS 0.9x
Category:
Main\Reference\Libraries\Library and Information Science\Technical Services
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Validator CSS (Popularity: )
(Score: 9.79)
W3C CSS validation service.
Category:
Main\Computers\Data Formats\Style Sheets\CSS
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STG Validator (Popularity: )
(Score: 9.47)
On-line checking of XML specified by URL, local file, or cut and paste.
Category:
Main\Computers\Data Formats\Markup Languages\XML
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Mimer SQL (Popularity: )
(Score: 9.47)
Embedded SQL solutions, plus an online SQL Validator (for SQL 92, SQL 99 and SQL 2003)
Category:
Main\Computers\Software\Databases\Oracle
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W3C HTML Validation Service (Popularity: )
(Score: 9.37)
World Wide Web Consortium validator.
Category:
Main\Computers\Data Formats\Markup Languages\HTML
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A Real Validator (Popularity: )
(Score: 9.37)
Windows. Based on an SGML parser. Shareware.
Category:
Main\Computers\Software\Internet\Authoring
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W3C CSS Validator (Popularity: )
(Score: 9.27)
Finds errors and potential problems in Cascading Style Sheets.
Category:
Main\Computers\Data Formats\Style Sheets\CSS
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Validome Markup Validation Service (Popularity: )
(Score: 9.27)
Multilingual validator for HTML, XHTML, and XML.
Category:
Main\Computers\Data Formats\Markup Languages\HTML
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Bulker (Popularity: )
(Score: 9.27)
Fast multithread, anonymous mailer, validator, searcher, and extractor.
Category:
Main\Computers\Software\Shareware\Windows
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E-validator (Popularity: )
(Score: 9.08)
A provider of on-line hard skills assessment tools and automated screening services.
Category:
Main\Computers\Software\Human Resources\Testing and Evaluation
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Redland RSS 1.0 Validator and Viewer (Popularity: )
(Score: 9.08)
Enter the address of an RSS 1.0 feed into the form, and it will be validated and formatted for display.
Category:
Main\Reference\Libraries\Library and Information Science\Technical Services
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ElCel Technology (Popularity: )
(Score: 9.08)
Develops C++ based XML software including a validator, parser and networking library.
Category:
Main\Computers\Data Formats\Markup Languages\XML
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OWL Validator (Popularity: )
(Score: 8.99)
Free on-line or downloadable tool allowing to check OWL content for syntactic and semantic errors.
Category:
Main\Reference\Knowledge Management\Knowledge Representation\Ontologies
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Web Mechanic (Popularity: )
(Score: 8.99)
Validator and lint eliminates redundant or conflicting tags and compresses image files. Pay service.
Category:
Main\Computers\Data Formats\Markup Languages\HTML
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XML Validation (Popularity: )
(Score: 8.99)
Web-based XML validator that produces easy to read error messages and asks for missing files (e. g., XSD) if necessary.
Category:
Main\Computers\Data Formats\Markup Languages\XML
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REL Software (Popularity: )
(Score: 8.90)
Web Link Validator utility for verification of links accuracy, existence and availability, and a detailed error report.
Category:
Main\Computers\Software\Shareware\Windows
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HTML Clinic (Popularity: )
(Score: 8.90)
Tutorials, tag list, hexadecimal color coder, forms validator, meta tag generator and a help forum.
Category:
Main\Computers\Data Formats\Markup Languages\HTML
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AspXer (Popularity: )
(Score: 8.90)
C# program to convert simple HTML forms to ASPX form controls, and does double duty as an XML validator.
Category:
Main\Computers\Programming\Internet\ASP
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HTML Link Validator (Popularity: )
(Score: 8.90)
Checks pages on web server or on local computer for broken links. Case sensitive.
Category:
Main\Computers\Software\Shareware\Windows
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Markup.co.nz (Popularity: )
(Score: 8.81)
Validator which attempts to load XHTML document in the MSXML parser and generate an error report. [Online and Download]
Category:
Main\Computers\Data Formats\Markup Languages\XHTML
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Submission Plus (Popularity: )
(Score: 8.81)
Automates site submissions with the scheduler, meta tag utitlity, link checker, html validator, and ranking utility.
Category:
Main\Computers\Internet\Web Design and Development\Promotion
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XML-RPC (Popularity: )
(Score: 8.81)
A Remote Procedure Calling protocol that works over the Internet. Specifications, API info, implementations, services, tutorials, service validator.
Category:
Main\Computers\Software\Operating Systems\Mac OS
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Will the real RSS validator please stand up? [dive into mark] (Popularity: )
(Score: 8.81)
Elaborates on how the RSS community is in disagreement about the exact format for RSS feeds and individual entries.
Category:
Main\Reference\Libraries\Library and Information Science\Technical Services
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Topologi Schematron Validator (Popularity: )
(Score: 8.53)
Shareware that validates XML documents using Schematron, DTDs, and W3C XML Schemas
Category:
Main\Computers\Data Formats\Markup Languages\XML
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Style Studio (Popularity: )
(Score: 8.53)
HTML and style sheets editor and validator for Windows.
Category:
Main\Computers\Data Formats\Style Sheets\CSS
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OWL Ontology Validator (Popularity: )
(Score: 8.53)
An on-line tool that identifies an ontology as OWL Lite, OWL DL, or OWL Full.
Category:
Main\Reference\Knowledge Management\Knowledge Representation\Ontologies
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Mail Validator (Popularity: )
(Score: 8.53)
verifies email addresses are deliverable in a email list.
Category:
Main\Computers\Software\Internet\Servers
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Tigra Form Validator PRO (Popularity: )
(Score: 8.52)
A JavaScript component performing client-side form validation.
Category:
Main\Computers\Programming\Languages\JavaScript
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Tobin, Richard (Popularity: )
(Score: 8.52)
Author of RXP parser, co-author of XSV schema validator. Co-editor of XML Infoset specification.
Category:
Main\Computers\Data Formats\Markup Languages\XML
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Tigra Form Validator (Popularity: )
(Score: 8.49)
A free JavaScript component performing client side form validation.
Category:
Main\Computers\Programming\Languages\JavaScript
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W3C HTML Validator (Popularity: )
(Score: 8.49)
Free Perl script for HTML validation.
Category:
Main\Computers\Programming\Languages\Perl
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XHTML 1.0 Validator (Popularity: )
(Score: 8.49)
Validates XHTML 1.0 documents against the appropriate XML schemas published by the W3C.
Category:
Main\Computers\Data Formats\Markup Languages\HTML
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Examplotron (Popularity: )
(Score: 8.41)
Uses instance documents as a lightweight schema language; sample documents are marked up with the information needed to guide a validator.
Category:
Main\Computers\Data Formats\Markup Languages\XML
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SP Instructions (Popularity: )
(Score: 8.41)
Windows. Instructions for the Do-it-yourself Offline HTML Validator using SP.
Category:
Main\Computers\Software\Internet\Authoring
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HotSource HTML Help (Popularity: )
(Score: 8.36)
An HTML tutorial, a tag list, webpage design tips and a validator. Includes are discussion boards on DHTML, CSS and JavaScript.
Category:
Main\Computers\Data Formats\Markup Languages\HTML
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