Suggestions for Parcolumns

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

Package parallel: Typeset parallel texts
Package reledpar: Typeset scholarly editions in parallel texts
Package pdfcolparcolumns: Fix colour problems in package parcolumns
Package pdfcolparallel: Fix colour problems in package parallel
Package paracol: Multiple columns with texts in parallel
Package collect: Gather text for later re-use
Package zahl2string: Format numbers as German words
Package sauerj: A bundle of utilities by Jonathan Sauer
Package bilingualpages: Typeset two columns in parallel
Package parrun: Typesets (two) streams of text running parallel
Package metainfo: Typeset document outline with metainfo
Package optparams: Macros with multiple optional parameters
Package processkv: Process key-value pairs
Package eledpar: Typeset scholarly editions in parallel texts
Package ledpar: Typeset scholarly editions in parallel texts
Package attachfile2: Attach files into PDF
Package attachfile: Attach arbitrary files to a PDF document
Package pdfmarginpar: Generate marginpar-equivalent PDF annotations
Package repltext: Control how text gets copied from a PDF file
Package hypgotoe: Links to embedded files
Package pst-pdf: Make PDF versions of graphics by processing between runs
Package caption2: Superseded version of the caption package
Package cuted: Mixing onecolumn and twocolumn modes
Package newproof: Make commands to define proofs
Package resizegather: Automatically resize overly large equations
Package exam: Package for typesetting exam scripts
Package fvextra: Extensions and patches for fancyvrb
Package llncs: Document class and bibliography style for Lecture Notes in Computer Science (LNCS)
Package pythonhighlight: Highlighting of Python code, based on the listings package
Package authblk: Support for footnote style author/affiliation
Package ascmac: Boxes and picture macros with Japanese vertical writing support