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Validator
Firebug extension to validate HTML...
![](https://icon.softwaresea.com/48x48/5/29/1014269.e899ed2c319ceefd27dc1472c662ff2b.gif)
CSS validator
CSS validator is a Firefox extension which validates a page using the W3C CSS Validator....
![](https://icon.softwaresea.com/48x48/5/41/1020425.81e0e2fde1dfb8019b254b3c5dd1a920.gif)
Spring-Validator
Spring-Validator is a tool that provides a simple way to auto-generate JavaScript client side valid code....
![](https://icon.softwaresea.com/48x48/7/363/1681061.526e6216ca44815ddbd6f3ebb44a081b.gif)
Open Validator
Check conformance of web pages to Internet best practices...
Firefox extension Firefox Validator webpage conformance website conformance
![](https://icon.softwaresea.com/48x48/7/379/1689388.fcea4baa7946dff7bc929f163ed28ee1.gif)
DNSSEC Validator
Checks whether a domain name in displayed page address is secured by DNSSEC...
![](https://icon.softwaresea.com/48x48/17/231/4115413.233f0252d6081ddf073324ca2c90df80.gif)
RPKI Validator
Validate server's IP prefix with this restartless add-on for the Mozilla Firefox web browser...
![](https://icon.softwaresea.com/48x48/5/29/1014495.0d10438c6accb7eeeee20906e7eacda7.gif)
Page validator
Page validator is a Firefox extension that validates a page using the W3C Markup Validation Service....
![](https://icon.softwaresea.com/48x48/5/29/1014228.ed07390f7b33b7d776d12a448e29d621.gif)
RSS validator
RSS validator is a Firefox extension that validates a page using the W3C RSS Validator....
![](https://icon.softwaresea.com/48x48/8/377/1938103.7b81e6697b6a471ff33a1e9ff4b6277a.gif)
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Total Validator
An extension which performs multiple validations and takes screen shots in one go....
multiple Total Validator multiple validations take shots Total
![](https://icon.softwaresea.com/48x48/8/377/1938384.f8015d471dc8d51a872cd61f27c6d9fa.gif)
Config::Validator
Schema based configuration validation...
![](https://icon.softwaresea.com/48x48/5/66/1032912.56104edc99131e7554d67d8381e2587b.gif)
CGI::FormMagick::Validator
CGI::FormMagick::Validator is a Perl module that can validate data from FormMagick forms....
![](https://icon.softwaresea.com/48x48/6/52/1275645.3da83022d6156057ddf4cee9ea6eb8a2.gif)
Bundle::W3C::Validator
Bundle::W3C::Validator is a Perl bundle of modules required by the W3C Markup Validator....
![](https://icon.softwaresea.com/48x48/5/85/1042146.48298bf2ca7eb7dcc9197f3f15012fed.gif)
Fast File Validator
Fast File Validator (FFV) is a program for verifying files against a checksum file and for creating such checksum files....
![](https://icon.softwaresea.com/48x48/5/87/1043044.7aa4de4503b423b5e56512ebcc646948.gif)
Structured Document Validator
Structured Document Validator project implements a generalized method for structured documents....
document structured Validator document validator structured documents
![](https://icon.softwaresea.com/48x48/14/396/3447842.0f5d8754fa535aa119f968f751a0229e.gif)
Simple Markup Validator
A simple markup validator add-on for Mozilla Firefox...
![](https://icon.softwaresea.com/48x48/5/52/1025890.f93a96cddbd265cc13399c8973e1abb2.gif)
Data::Validator::Item
Data::Validator::Item is a Factory Class to validate data items....
![](https://icon.softwaresea.com/48x48/8/64/1781521.6da4946b420a9f7ac863b92ea017221f.gif)
Offline Page validator
Offline Page validator is an extension which submits the current open page to the W3C validation tool....
![](https://icon.softwaresea.com/48x48/5/29/1014445.cdc2ef12625774c65be063d730cc2174.gif)
Relaxed the HTML Validator
Relaxed the HTML Validator is, like the name suggest, a HTML validator which validates HTML documents....