Suggestions for attachfile
The following packages have something in common with the package attachfile. The packages are ordered in decreasing similarity.
- ocgx: Use OCGs within a PDF document without JavaScript
 - mmap: Include CMap resources in PDF files from pdfTeX
 - ocgtools: Manipulate OCG layers in PDF presentations
 - ocg-p: PDF OCG support in LaTeX
 - pdf14: Restore PDF 1.4 to a TeX live 2010 format
 - threadcol: Organize document columns into PDF “article thread”
 - pdfcrypt: Allows the setting of pdf encryption
 - pdfmarginpar: Generate marginpar-equivalent PDF annotations
 - embedall: Embed source files into the generated PDF
 - docassembly: Use the Acrobat JavaScript API
 - ltx4yt: Play YouTube videos in the default browser
 - thorshammer: Assessment based on AcroTeX quizzes
 - pax: Extract and reinsert PDF annotations with pdfTeX
 - intopdf: Embed non-PDF files into PDF with hyperlink
 - javascripthttp: Add buttons to a PDF to easily get and post web content
 - accessibility: Create tagged and structured PDF files
 - accsupp: Better accessibility support for PDF files
 - cmap: Make PDF files searchable and copyable
 - cooltooltips: Associate a pop-up window and tooltip with PDF hyperlinks
 - fancytooltips: Include a wide range of material in PDF tooltips
 - hypgotoe: Links to embedded files
 - insdljs: Insert document-level JavaScript in LaTeX documents
 - repltext: Control how text gets copied from a PDF file
 - xcjk2uni: Convert CJK characters to Unicode, in pdfTeX
 - xmpincl: Include eXtensible Metadata Platform data in pdfLaTeX
 - yt4pdf: Play YouTube videos in a PDF
 - pdfannotations: Annotate PDF slides
 - attachfile2: Attach files into PDF
 - hyperxmp: Embed XMP metadata within a LaTeX document
 - pdfx: PDF/X and PDF/A support for pdfTeX, LuaTeX and XeTeX
 - bxpdfver: Specify version and compression level of output PDF files