Suggestions for PDF 1.4

The following packages have something in common with the package PDF 1.4. The packages are ordered in decreasing similarity.

Package accsupp: Better accessibility support for PDF files
Package docassembly: Use the Acrobat JavaScript API
Package embedall: Embed source files into the generated PDF
Package fancytooltips: Include a wide range of material in PDF tooltips
Package javascripthttp: Add buttons to a PDF to easily get and post web content
Package newpax: Experimental package to extract and reinsert PDF annotations
Package ocg-p: PDF OCG support in LaTeX
Package ocgx: Use OCGs within a PDF document without JavaScript
Package thorshammer: Assessment based on AcroTeX quizzes
Package xmpincl: Include eXtensible Metadata Platform data in pdfLaTeX
Package cooltooltips: Associate a pop-up window and tooltip with PDF hyperlinks
Package ltx4yt: Play YouTube videos in the default browser
Package pax: Extract and reinsert PDF annotations with pdfTeX
Package yt4pdf: Play YouTube videos in a PDF
Package threadcol: Organize document columns into PDF article thread
Package insdljs: Insert document-level JavaScript in LaTeX documents
Package pdfcrypt: Allows the setting of pdf encryption
Package bxpdfver: Specify version and compression level of output PDF files
Package ocgtools: Manipulate OCG layers in PDF presentations
Package pdfannotations: Annotate PDF slides
Package xcjk2uni: Convert CJK characters to Unicode, in pdfTeX
Package attachfile2: Attach files into PDF
Package artthreads: Support for article threads
Package attachfile: Attach arbitrary files to a PDF document
Package embedfile: Embed files into PDF
Package hyperxmp: Embed XMP metadata within a LaTeX document
Package mmap: Include CMap resources in PDF files from pdfTeX
Package pdfmarginpar: Generate marginpar-equivalent PDF annotations
Package pdfcomment: A user-friendly interface to pdf annotations
Package pdfprivacy: A LaTeX package to remove or suppress pdf meta-data
Package richtext: Create rich text strings