OutGuess

OutGuess
Original authorNiels Provos
Initial release1999 (1999)
Stable release
0.4 / 2 September 2021 (2 September 2021)
Written inC
Operating systemWindows, Unix-like
Typesteganography
LicenseBSD (Free Software)
Repository

OutGuess is a steganographic software. It has handlers for image files in the common Netpbm and JPEG formats, so it can, for example, specifically alter the frequency coefficients of JPEG files. It is written in C and published as Free Software under the terms of the old BSD license. It has been tested on a variety of Unix-like operating systems and is included in the standard software repositories of the popular Linux distributions Debian and Arch Linux (via user repository) and their derivatives.