The bundle comprises packages to provide:
– aliascnt: ‘alias counters’;
– alphalph: multiple-alphabetic counting;
– attachfile2: attach files to PDF files;
– auxhook: stick stuff at the start of the .aux file;
– bmpsize: get bitmap size and resolution data;
– centernot: a horizontally-centred \not symbol;
– chemarr: extensible chemists’ reaction arrows;
– classlist: record information about document class(es) used;
– colonequals: poor man‘s mathematical relation symbols;
– dvipscol: dvips colour stack management;
– embedfile: embed files in PDF documents;
– engord: define counter-printing operations producing English ordinals;
– epstopdf: conversion with epstopdf on the fly;
– grffile: extend file name processing in the graphics bundle;
– hypbmsec: bookmarks in sectioning commands;
– hypcap: anjusting anchors of captions;
– hypdestopt: optimising hyperref's pdftex driver destinations;
– hypdoc: hyper-references in the LaTeX standard doc package;
– ifdraft: switch for option draft;
– ifpdf: provides the ifpdf switch;
– ifvtex: provides the ifvtex switch;
– inputenx: enhanced handling of input encoding;
– kvsetkeys a variant of the \setkeys command;
– makerobust: make a command robust;
– pagesel: select pages of a document for output;
– pdfcolfoot: using pdftex’s color stack for footnotes;
– pdfcolmk: PDFTeX COLour MarK — fake a PDFTeX colour stack using marks (not needed for PDFTeX 1.40.0 and later);
– pdfcrypt: setting pdf encryption;
– pdflscape: landscape pages in PDF;
– picture: dimens for picture macros;
– pmboxdraw: poor man's box drawing characters;
– refcount: using the numeric values of references;
– setouterhbox: set \hbox in outer horizontal mode;
– settobox: getting box sizes;
– stackrel: extensions of the \stackrel command;
– tabularht: tabulars with height specification;
– tabularkv: key value interface for tabular parameters;
– telprint: print German telephone directories;
– transparent: using a color stack for transparency with pdftex;
– twoopt: commands with two optional arguments;
– zref: a proposed new reference system.

Each of the packages is represented by two files, a .dtx (documented source) and a PDF file; the .ins file necessary for installation is extracted by running the .dtx file with Plain TeX

The author is Heiko Oberdiek.