Usefull Sites

To check if a port is open:

http://www.canyouseeme.org/

To multiple scan a file for viruses:

http://vscan.novirusthanks.org/

The best online dork scanner out here:

http://dreamkiller.byethost17.com/sqli/

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/

It gives you alternatives for program's

http://alternativeto.net

Upload and send files to friends etc. Very quick

http://ge.tt/

Online LFI RFI PD Scanner

http://wasteez.com/

i will post more links soon inshAllah .....