MAY 2009
Chess opening graph library DSL metaprogramming by Stephen Touset
VOIP-ing Rails apps with Adhearsion by Randy Parker

APRIL 2009
Messaging with Message Queues and XMPP by Matt Todd 
Webby by Victor Tolbert
Jordi Bunster
What's Happening with Ruby by Adam Dill

MARCH 2009
Introduction to JQuery by Ernest Ellingson
Testing with Mocks! by Brian Guthrie 
JQuery! by Adam Dill  

FEBRUARY 2009
Story Driven Development With Rails by Rein Henrichs
Lockdown by Andrew Stone
Watir by Al Snow

JANUARY 2009
Moonshine by Jesse Newland
"Forecasting Degree Days by US County" by Ernie Ellingson
Rack by Matt Todd

DECEMBER 2008
Passenger and enterprise ruby by Keith Hudgins
Bootstrapping your rails application by Steve Touset 

NOVEMBER 2008
Mobilize Your Rails Application by Brendan Lim
Merb and CouchDB by  Adam Dill, Ho-Sheng Hsiao 
Ruby Development Tips & Tricks by Collin VanDyck

OCTOBER 2008
Merb - Matt Todd
Datamapper - John Schult

SEPTEMBER 2008
Ansuz (www.ansuzcms.com) - Adam Dill, Ho-Sheng Hsiao 
startatlanta.org - Loren Norman
ambling.rubyforge.org - Andrew Hobson
dot language flowcharts - Sam Schenkman-Moore

AUGUST 2008
MacRuby - Robert Walker
JMeeting - Jesse Schloch, Engine Yard
RubyHoeDown - Luigi Montanez

JULY 2008
BackgroundDRB - Jonathan Wallace (http://github.com/wallace/bdrb-presentation/tree/master)
God - Jesse Newland (http://www.atlruby.org/jnewland/posts/45-God-Process-and-Task-Monitoring-Done-Right-Slides)

JUNE 2008
Bad Ruby - Stuart Halloway, Relevance (http://github.com/stuarthalloway/bad-ruby/tree/master)

MAY 2008
Amazon EC2 Wrapper by Keith Hudgins
Beautiful Views in Rails by Adam Dill
Freebase by Sam Schenkman-Moore (http://github.com/samsm/freebaserubything/tree/master)

APRIL 2008
Halcyon - Matt Todd
DataMapper & ActiveRecord improvements in Rails 2.1 - Jordi Bunster
Thin by Luigi Montanez
Video upload, Transcoding to Flash, and Storage on S3 by Tim Kadom 

MARCH 2008
Cloud Computing (Amazon EC2, IBM's Blue xxx, RightScale, MorphLab's MAP) by John Willis
Git source control by Jesse Newland 

FEBRUARY 2008
Ruby 1.9 by Stephen Touset
ActiveMessaging
CouchDB 
Web Monitoring with Scout http://scoutapp.com/... by Charles Brian Quinn
MorpheXchange

JANUARY 2008
Netbeans by Sun's Gregg Sporar
Haml/SASS/StaticMatic by Andrew Bennett
OLPC by Ernie Ellingson

DECEMBER 2007
RubyCocoa by Jordi Bunster
mystock.com  by Andrew Bennett and Jon Phillips
Nursing Home Application by Bill Siggelkow
Matrioshka project by Sam Schenkman-Moore

NOVEMBER 2007
Rails Survival Guide by Luigi Montanez
Ruby Conf round-up by Stephen Touset and Sari Connard

OCTOBER 2007
Metaprogramming by Stephen Touset
Nginx by Mark Percival

SEPTEMBER 2007
Lightning Talks

AUGUST 2007
Metaprogramming
RSpec by Stephen Touset

JULY 2007
Open Id by Toby Ho
Active Record 

JUNE 2007
RailsConf round-up
Pallet

MAY 2007
First impressions of Joyent Slingshot (online/offline Rails applications) by Eric Wagoner
Asterisk (telephony, VOIP) with Ruby by Ernie Ellingson

JUNE 2007
Rails Caching

MARCH 2007
Ruby GUIs - Fox(Ernie Ellingson) and TK/TCL(Sari Connard)
Javscript/Prototype hacking with Rails - wamily.com 

FEBRUARY 2007
My Favorite Plugin

JANUARY 2007
Globalize - adding localization and translations to Rails applications
acts_as_taggable - Charlie Hubbard 

DECEMBER 2006
AJAX with RJS by Josh Ferguson
ActiveRecord by Marshall Vandegrift

NOVEMBER 2006
Rspec by Charlie Hubbard
Test Driven Development (TDD) by David Corbin

OCTOBER 2006
Capistrano Deployment by Charles Brian Quinn
Ferret (Ruby implementation of Lucene) Search by Charlie Hubbard