Packing your Ruby application into a single executable.

OCRA (One-Click Ruby Application) builds Windows executables from Ruby source code. The executable is a self-extracting, self-running executable that contains the Ruby interpreter, your source code and any additionally needed ruby libraries or DLL.

A portable MRI Ruby environment and toolset

Ruby to EXE - Turn ruby scripts into portable executable apps

Crate is a developer tool to help package up your application as a custom static build of the ruby interpreter plus all dependent binary extensions. All the pure ruby code (the ruby application, the ruby stdlib, etc ) is packed into one or more SQLite databases. The final distributable pieces are a single executable and a few SQLite databases which can be then wrapped up appropriately as an OS X App; a self extracting executable for Windows; a shar archive, rpm or tarball for Unixes.

Releasy helps to make Ruby application releases simpler, by creating and archiving source folders, Windows folders, standalone executables, installers and OS X app bundles.

A Ruby Compiler