Suggestions for oca
The following packages have something in common with the package oca. The packages are ordered in decreasing similarity.
- eurosym: METAFONT and macros for Euro sign
 - moonphase: Font for representing the phases of the moon
 - morse: Support for printing Morse code signs
 - wnri: Ridgeway's fonts
 - greenpoint: The Green Point logo
 - ocr-a: Fonts for OCR-A
 - halftone: Knuth’s halftone font and its uses
 - xcmr: A crossed-out version of Computer Modern
 - bguq: Improved quantifier stroke for Begriffsschrift packages
 - genealogy: A compilation genealogy font
 - oands: Glyphs used when transliterating ancient scripts
 - dozenal: Typeset documents using base twelve numbering (also called “dozenal”)
 - recycle: A font providing the “recyclable” logo
 - euro-ce: Euro and CE sign font
 - gray: Fonts for gray-scales
 - kixfont: A font for KIX codes
 - util-half: A half-tone font
 - ocr-b: Fonts for OCR-B
 - phonetic: METAFONT Phonetic fonts, based on Computer Modern
 - semaphor: Semaphore alphabet font
 - tipa: Fonts and macros for IPA phonetics characters
 - vispeech: Using Bell's Visible Speech alphabet
 - tfrupee: A font offering the new (Indian) Rupee symbol
 - committee-font: A font designed by a committee
 - othello: Modification of a Go package to create othello boards
 - ar: Capital A and capital R ligature for Aspect Ratio
 - china2e: Font and macros for Chinese calendar
 - starfont: The StarFont Sans astrological font
 - fonetika: Support for the Danish “Dania” phonetic system
 - aspectratio: Capital A and capital R ligature for Aspect Ratio
 - cm-mf: Sources of the Computer Modern fonts