Suggestions for Ffcode

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

Package numline: LaTeX macros for numbering lines
Package ntabbing: Simple tabbing extension for automatic line numbering
Package fnlineno: Number the lines of footnotes
Package linenoamsmath: Use the lineno package together with amsmath
Package lineno: Line numbers on paragraphs
Package newvbtm: Define your own verbatim-like environment
Package verbasef: VERBatim automatic splitting of external files
Package altnline: Line numbering in LaTeX 2.09
Package framedsyntax: Typeset the syntax of commands and environments within coloured boxes
Package minted-code: Predefined environments for typesetting LaTeX code with minted
Package xlistings: Opinionated extensions to the listings package
Package lualineno: Line numbering in LuaTeX-based formats
Package listings: Typeset source code listings using LaTeX
Package minted: Highlighted source code for LaTeX
Package tcolorbox: Coloured boxes, for LaTeX examples and theorems, etc.
Package niceverb: Minimising markup for documenting LaTeX packages
Package dashrulex: Draw dashed rules
Package foliono: Use folio numbers to replace page numbers
Package romanneg: Roman page numbers negative
Package romanbarpagenumber: Typesetting roman page numbers
Package pagecont: Page numbering that continues between documents
Package multicolrule: Decorative rules between columns
Package cprotectinside: Use cprotect arbitrarily nested
Package gmverb: A variant of LaTeX \verb, verbatim and shortvrb
Package phfquotetext: Quote verbatim text without white space formatting
Package saveenv: Save environment content verbatim
Package verbatimcopy: Make copies of text documents from within LaTeX
Package setspaceenhanced: An enhancement of the setspace package
Package dashundergaps: Produce gaps that are underlined, dotted or dashed
Package decorule: Decorative swelled rule using font character
Package setspace: Set space between lines