ARG Toolbox
Tools
Cipher Solving Tools
Cyberchef
https://gchq.github.io/CyberChef/
Includes tools to decipher B64, MD5, and other reled hashes.
asciitohex
Converts ASCII to hex and vice versa, as well as to other number-based encryption methods.
Rumkin
http://rumkin.com/tools/cipher/
Has tools to decipher many common encryption methods, including Caesar and Vigenere ciphers.
Cryptii
https://cryptii.com/text/select
An MIT site that decrypts many encryption methods, including Enigma and hex.
The Black Chamber
http://www.simonsingh.net/The_Black_Chamber/chamberguide.html
A compendium of different text-based ciphers.
md5hashing
https://md5hashing.net/hash_type_checker
Allows you to decode many variations of MD5 and Sha ciphers.
Xlate
A multibase data translator made by the creator of ae27ff, crashdemons.
Shift/XOR Report
http://otp22.com/xlate/shifts.html
Made by the creator of ae27ff, allows the visualization of all possible 256 byte shifts.
OtpXor
https://github.com/otp22/decoders/tree/master/OtpXor
Made by the creator of ae27ff, allows for the xoring of two large files together.
XorJ
https://github.com/crashdemons/XorJ
Made by the creator of ae27ff, allows for the xoring of two relatively small files together.
HTTP Referrer Extension
https://addons.mozilla.org/En-US/firefox/addon/refcontrol/
An extension for Firefox to help find HTTP referrers.
HxD
Hex editor/viewer.
Audio Analysis
Image Analysis
Binvis.io
A tool that gives a visual representation of binary files.
Jeffrey's Image Metadata Viewer
Allows you to view the metadata of images.
EXCIF.cgi
Image exif and metadata viewer.
FotoForensics
Image metadata and Error Level Analysis.
RawPixels
A website that visualizes .raw files.
Jhead
Made by the creator of ae27ff; allows for the viewing of jpeg headers, abnormalities, and outgress output.