http://host-tracker.com/
http://www.webpagetest.org/
http://pageload.monitis.com/pagespeed.jsp
http://tools.pingdom.com/
http://webcheck.me/
http://www.websiteoptimization.com/
http://www.showslow.com/
http://www.websitepulse.com/help/tools.php
http://www.wmtools.net/tools
http://www.watchmouse.com/en/
http://internetsupervision.com/scripts/urlcheck/check.aspx?checkurl=forum.likg.org.ua
http://uitest.com/en/check/results/?uri=http%3A%2F%2Fforum.likg.org.ua
http://hosts-file.net/?s=forum.likg.org.ua
http://gtmetrix.com/
http://media4x.com/test/#url=http://forum.likg.org.ua
http://check-host.net/check-http?host=http://forum.likg.org.ua
https://browsermob.com/free-website-performance-test
http://www.dotcom-monitor.com/WebTools/technical-tools-browser-test.aspx
http://ping.ms/
http://www.just-ping.com/
http://www.super-ping.com/
http://www.tcpiputils.com/
https://up24.pro/
Malware check:
http://scan.sucuri.net/
http://ghostbusters.cc/domain/check/
http://support.clean-mx.de/clean-mx/[email protected]&response=alive
http://www.avgthreatlabs.com/sitereports/domain/likg.org.ua
http://www.urlvoid.com/
Free online antivirus:
http://www.virustotal.com/