Decode online

http://www.asciitohex.com/

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.php

View 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/