LaTeX is a widely-used macro package for TeX, providing many basic document formating commands extended by a wide range of packages. It is a development of Leslie Lamport's original , and superseded the older system in June 1994. The basic distribution is catalogued separately, at ; apart from a large set of contributed packages and third-party documentation (elsewhere on the archive), the distribution includes:

– a bunch of , which LaTeX authors are “entitled to assume” will be present on any system running LaTeX; and
– a minimal set of documentation detailing differences from the ‘old’ version of LaTeX in the areas of , , , , and .

For downloading details, see the linked catalogue entries above.

The authors are The LaTeX Team and Leslie Lamport. The package is Copyright © 1993-2009 The LaTeX3 Project.