Changes from Emacs Starter Kit
This modifications firstly targeting Ruby users and some modifications like "auto-complete" usefull for all users. You can add not included usefull packages like "rinari" for Ruby on Rails through ELPA.
added "Rakefile" changed install method (look Installation)...

Hash for using as fast lookup table for simple checking of an existency of some item.

LJPost is an "interface-free" (command line) client for LiveJournal servers. It features support for most applicable LiveJournal functionality and, via RubyGems, Markdown, Textile and SmartyPants support.

Tasks setup an apache conf file, adds mongrel to smf, and lets you do normal capistrano things.

ioSnippet will be a web based code snippet manager with version control, commenting system, rating system and a desktop application that stays synced with the server.

a rails app,

Built on Ruby on Rails. Dynamic content management system for Vail System's company website. This framework is not as flexible as other blogging engines since it is focused on Vail System's needs.

MiniBase is an ultra-minimalist database system implemented in under 100 lines.,

Genetic Star Fighter is a very simple game made in Ruby with the Gosu 2D game library. The game is just an excuse to visualize the undergoing process, which is the enemy's code improvement through evolution.

Our goal is to learn about Evolutionary Computing as we go, and not to make an impressive game (just an impressive AI). ...

Nothing special here, but I guess sharing these code snippets is better than having them moldering on some hard disk.