eppstein-trees – Macros for producing trees
Tree macros that draw horizontally, proceeding from a root at the left of the page.
Maybe you are interested in the following packages as well.
- tree-dvips: Trees and other linguists' macros
- treetex-ltx209: Draw horizontally- or vertically-oriented trees
- linguex: Format linguists' examples
- plainmisc: Miscellaneous contributed macros for plain TeX