Universal markup converter

ShellCheck, a static analysis tool for shell scripts

A statically typed lisp, without a GC, for real-time applications.

The Egison Programming Language

Simply Reactive! Declarative orchestration in Haskell using RDP

A command-line interface description language and parser that will make you smile

small-but-featureful embeddable lisp interpreter written in haskell.

Tiling window manager for Mac OS X.

Know your algorithms cold!

An interpreter for the Mistral language.

Working through "Write Yourself a Scheme in 48 Hours"