21 May 2005 15:00
The W3C Markup Validation Service
by 73 othersfree service that checks Web documents in formats like HTML and XHTML for conformance to W3C Recommendations and other standards.
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Founded in late 2003 and heartquartered in France, we are non-profit and independant.
We believe in the open web, think internet services should be sustainable, build for the long term.
While we are re-launching the service, we only accept new members through invitation.