simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module
friendly little parsers
Scala macros for compile-time generation of safe and ultra-fast JSON codecs
The Comment Parser supports various languages based on FSM. It's written by scala and java.
Convert LaTeX markup to Unicode (in Scala and Java)
:memo:Generate literate-style markdown docs from your sources
CSV parser library.