Internet Tools for your website
Coding and Scripts
dynamicdrive.com (DHTML & Javascripts)validator.w3.org (Markup Validation Service)
Content
copyscape.com (Duplicate Content Checker)revolvermaps.com (Real-time Visitor Statistics Widgets)
Domains
namedroppers.com (Partial Domain Name Search)verify-email.org (Email Verifier)
Events
eventbrite.com (Ticketing Management)Graphics
autodraw.com (Graphics Tool)logomaker.com (Logo Maker)
Images
123rf.com (Paid Images)1millionfreepictures.com (Free Images)
stock.adobe.com (Paid Images)
nos.twnsnd.co (Free Vintage Images)
pixabay.com (Free Images)
splitshire.com (Free Images)
unsplash.com (Free Images)
Performance
quirktools.com/screenfly (Rendering Check)tools.pingdom.com (Website Speed Check)
websitegrader.com (Website Grader)
QR Code
qrcode.kaywa.com (QR Code Generator)zxing.org (QR Code Reader)
Security
ssllabs.com/ssltest (SSL Test)sitecheck.sucuri.net (Website Security Check)