Some Important Websites

To check if a port is open:

http://www.canyouseeme.org/

To multiple scan a file for viruses:

http://vscan.novirusthanks.org/

To check if a site is down:

http://www.downforeveryoneorjustme.com/

A place to get newest exploits:

http://www.exploit-db.com/

Lets other people view your inserted text:

http://pastebin.com/

The free online crypting + decrypting service:

http://www.crypo.com/

An online MD5 decrypter:

http://www.md5decrypter.com/

The best online Admin Page Finder:

http://sc0rpion.ir/af/

Online WPA cracker:

http://wpa.darkircop.org/

Online Fake Mailer:

http://emkei.cz/

A mailing site ( it gives you a temporary email account to send and receive messages ):

http://10minutemail.com/10MinuteMail/index.html

It gives you alternatives for program's:

http://alternativeto.net/

Upload and send files to friends etc. Very quick:

http://ge.tt/

The best online Admin Page Finder:

http://sc0rpion.ir/af/

Online WPA cracker:

http://wpa.darkircop.org/

Online Fake Mailer:

http://emkei.cz/

http://10minutemail.com/10MinuteMail/index.html