HEATKEYS

Offers bookmark synchronization, search enhancement and web discovery based on sites bookmarked by users.

VirusTotal is a free virus, malware and URL online scanning service. File checking is done with more than 40 antivirus solutions. Files and URLs can be sent via web interface upload, email, API or making use of VirusTotal

Easily find more sites like those you like. Similar Sites helps you find related sites and alternatives based on community recommendations and computer analysis.

Website down status test if a particular website is not opening. If your

WOT is a community-based, free safe surfing tool for browsers that provides website ratings & reviews to help web users as they search, surf & shop online.

Scan websites with multiple engines to check if the site is safe to browse. Security tools for webmasters. Free internet service.

From AboutUs: See what information we have on Wiki and share your knowledge.

Is a website down for just you or is it down for everyone? Check to see if Facebook is down or other popular websites here online at DownForMe.org.

Website not working is online website down or not status check tool. If a site is not found, not working, our status checker shows if it

FREE SEO & PPC Keyword Research software tool, that unveil your competitors’ most profitable Ad copies & keywords. Learn from time-tested Ad campaigns.

Webutation scan's websites against ongoing malware scripts and collects realtime user feedback and experience. It is free & open! Safe Surfing!