GiF: http://www.gifexploder.com/
Brainfuck interpreter
http://esoteric.sange.fi/brainfuck/impl/interp/i.html
hash
https://crackstation.net/
UUEncode
http://www.webutils.pl/index.php?idx=uu
RSA
http://www.yashira.org/index.php?mode=RSA
String:
http://string-functions.com/reverse.aspx
Vigenère
http://www.mygeocachingprofile.com/codebreaker.vigenerecipher.aspx
Hash file:
http://www.fileformat.info/tool/hash.htm
MD5 decode:
http://www.md5decrypter.co.uk/
Mã Morse:
http://morsecode.scphillips.com/jtranslator.html
http://www.onlineconversion.com/morse_code.htm
Base 64:
http://www.convertstring.com/vi/EncodeDecode/Base64Encode
the caesar
http://www.braingle.com/brainteasers/codes/caesar.php
http://web.forret.com/tools/rot13.asp?rot=9&cipher=MNJMKNNO&dir=decrypt&clear=ZAWZXAAB
DTMF decode
http://dialabc.com/sound/detect/index.html
DTMF
http://www.mediacollege.com/audio/tone/dtmf.html
Image steganography
http://incoherency.co.uk/tools/hideimage.phpView coment trong 1 buc anh
http://regex.info/exif.cgi?
View text hidden imag
http://utilitymill.com/utility/Steganography_Decode
Crypto online
http://www.cryptool-online.org/index.php?option=com_content&view=article&id=47&Itemid=29&lang=en
crypto
http://www.simonsingh.net/The_Black_Chamber/substitutioncrackingtool.html
steg chuyen anh thanh doc
http://finereader.abbyyonline.com/en/Task/Queue
http://textmechanic.com/ASCII-Hex-Unicode-Base64-Converter.html
openssl heartbleed
http://filippo.io/Heartbleed/
GIF
http://www.gifexploder.com/