Tex packages for linguistics

A good way to see what the capabilities of these packages are is to take a look at the User's Guides, which each have many examples.

ExPex

ExPex is designed to typeset examples and glosses. Version 4 is a major revision of earlier versions. In particular, the glossing capabilities have been significantly improved. User's Guide.

PST-JTree

jTree is a macro package based on PSTricks which is designed to typeset the kinds of trees that are common in linguistics; at least the kind of linguistics that I do. User's Guide.

PST-ASR

The PST-ASR package is designed to assist PSTricks in typesetting autosegmental representations. User's Guide.