Lik`s forum

http://ifconfig.me/
http://whatismyip.org/

http://pleskhacker.com/

http://dnssec-debugger.verisignlabs.com/
http://dnsviz.net/

http://www.root-servers.org/
http://www.root-dnssec.org/
http://www.securitylab.ru/contest/355930.php

http://cache.nevkontakte.com/

Verify your SSL certificate installation with the help of the following diagnostic tools:
http://www.digicert.com/help/
http://www.sslshopper.com/ssl-checker.html#hostname=forum.likg.org.ua
http://certlogik.com/ssl-checker/
https://www.ssllabs.com/ssltest/
https://knowledge.rapidssl.com/support/ssl-certificate-support/index?page=content&id=SO9556&actp=RELATED_RESOURCE&actp=RELATED_RESOURCE&actp=RELATED_RESOURCE
https://verifyssl.com/verify
https://www.geocerts.com/ssl_checker
https://ssltools.geotrust.com/checker/views/certCheck.jsp
http://tools.maxcdn.com/ssl
https://sslanalyzer.comodoca.com/
https://www.htbridge.com/ssl/

CLI:
https://testssl.sh/

Check CSR:
http://www.thawte.nl/en/support/test+your+csr/
https://ssltools.geotrust.com/checker/views/csrCheck.jsp

http://notary.icsi.berkeley.edu/
https://crt.sh/

Chech CRL and OCSP status:
https://certificate.revocationcheck.com

Check if a website properly supports the SPDY protocol:
http://spdycheck.org/

Mozilla SSL Configuration Generator
Generate Secure Configuration with `sslmate mkconfig`

https://www.pingfinity.io/
http://www.247webmonitoring.com/
http://pingdom.com/
http://mxtoolbox.com/services_servermonitoring.aspx
http://www.freewebmonitoring.com/
http://www.uptimerobot.com/
https://binarycanary.com/
http://monitor.us/
http://www.rvmonitoring.com/
http://www.mysitespeed.com/
http://www.serviceuptime.com/
http://www.statuscake.com/
http://www.montastic.com/
http://www.pingpro.com/
http://pingability.com/
http://www.pingfinity.io/
http://www.200please.com/
https://www.insping.com/

http://rsnapshot.org/

http://winginx.ru/htaccess
http://www.anilcetin.com/convert-apache-htaccess-to-nginx/

eval gzinflate base64_decode PHP Decoder
http://www.tareeinternet.com/scripts/decrypt.php
php $_F=__FILE__;$_X= Byterun Decoder
http://www.tareeinternet.com/scripts/byterun.php