NameCheckup vs W3C Markup Validation Service
A side-by-side look at NameCheckup and W3C Markup Validation Service. For an in-depth review of either product, follow the links below.
NameCheckup
Online Services
NameCheckup is a free online tool that allows you to check if a desired username or vanity URL is available across over 70 popular social media sites and apps. It's useful for branding to secure your preferred consistent username across multiple platforms.
usernamebrandingsocial-media
W3C Markup Validation Service
Web Browsers
The W3C Markup Validation Service is a free tool that checks HTML and XHTML documents for conformance to W3C standards. It can help identify potential issues in web pages and ensure they use valid markup.
htmlxhtmlvalidatorw3cstandards
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