Suggestions for secretx

The following packages have something in common with the package secretx. The packages are ordered in decreasing similarity.

Package randtext: Randomise the order of characters in strings
Package switcheml: Obfuscate email addresses (now obsolete)
Package tex-label: Place a classification on each page of a document
Package aspen: Simple crypto notation in LaTeX
Package censor: Tools for producing redacted documents
Package secret: Put security classification marks in a document
Package transparent-io: Show for approval the filenames used in \input, \openin, or \openout
Package eq-pin2corr: Add PIN security to the Correct button of a quiz created by exerquiz
Package luacensor: Securely redact sensitive information using Lua
Package enigma: Encrypt documents with a three rotor Enigma
Package was: A collection of small packages by Walter Schmidt
Package foilhtml: Interface between foiltex and LaTeX2HTML
Package mapcodes: Support for multiple character sets and encodings
Package ltxmisc: Miscellaneous LaTeX packages, etc.
Package calendar-barr: A calendar document
Package coursepaper: Prepare university course papers
Package concprog: Concert programmes
Package courseoutline: Prepare university course outlines
Package jknappen: Miscellaneous packages by Joerg Knappen
Package kalender: Create a calendar, in German
Package labels: Print sheets of sticky labels
Package mhs: Historical mathematics
Package outliner: Change section levels easily
Package utorontothesis: A thesis class definition for University of Toronto
Package utthesis: Thesis package for the University of Texas at Austin
Package fundus: Providing LaTeX access to various font families
Package piff: Macro tools by Mike Piff
Package atendofenv: Add a custom symbol at the end of an environment
Package bxtexlogo: Additional TeX-family logos
Package docutils: Helper commands and element definitions for Docutils LaTeX output
Package debate: Debates between reviewers