Digital Library of Georgia - http://dlg.galileo.usg.edu/?Welcome&Welcome&Welcome - digitized books, manuscripts, photographs, government documents, newspapers, maps, audio, video, and other resources; a million digital objects in 110 collections from 60 institutions and 100 government agencies
Georgia Historical Society - http://www.georgiahistory.com/containers/2 - search digital images of their photograph and print collections, use online catalog and finding aid, check out the Savannah Jewish Archives, and listed to oral histories about the preservation movement in Savannah
Georgia's Virtual Vault: Digital Treasures from the Georgia Archives - http://content.sos.state.ga.us/index.php - historic Georgia manuscripts, photographs, maps, and government records housed in the state archives; includes family collections, deed and will books, Confederate enlistment oaths and discharges, Confederate Pension Application supplements, Spanish-American War Service summary cards, county tax digests, plats of survey, state death certificates, photographs, trademark registrations, and much, much more!
New Georgia Encyclopedia - http://www.newgeorgiaencyclopedia.org/nge/Home.jsp - "an authoritative source on the people, places, events, and institutions of Georgia. The site contains nearly 2,000 articles and more than 5,000 images and audio and video clips on the history, culture, and life of the state."
Armstrong Atlantic State University Lane Library - http://library.armstrong.edu/archives.html - photos, history
Augusta State University Reese Library Special Collections Digital Projects - http://www.aug.edu/~liblsc/digital-projects.html - photos of Augusta; Georgia Archives Week/Month feature archives
Columbus State University Digital Collections - http://archives.colstate.edu/digital_collections/index.php - diaires, photographs, oral histories, Journal of the Georgia Association of Historians, music
Emory University Robert W. Woodruff Library, Digital Resources - http://web.library.emory.edu/innovations - includes Emory Women Writers Resource Project, Southern Changes Digital Archive, and Voyages: the Trans-Atlantic Slave Database (identifies over 67,000 Africans aboard slave ships, using name, age, gender, origin, and place of embarkation)
Georgia Institute of Technology Digital Collections - http://www.library.gatech.edu/archives/digital_collections.html - photographs, sketches and drawings of campus buildings, Fulton Bag and Cotton Mills collection, Historical American Buildings Survey photos, videotaped oral histories, Georgia Tech historic ads, yearbooks, speeches and presentations, Technique (student newspaper). Collaborative projects include Witness to the Holocaust, National Security for the 21st Century, and Atlanta in the Civil Rights Movement
Georgia Southern University Henderson Library Special Collections - http://library.georgiasouthern.edu/specialcollections/main.html - while there is not a lot of info online, you can search indexes (such as a list of those interviewed for oral histories) and finding aids as well as view some images of their special collection materials
Georgia State University Special Collections and Archives - http://www.library.gsu.edu/spcoll/index.asp - Southern Labor Archives, university archives, popular music, photographs, rare books, women's collection, oral histories, and more
University of Georgia Libraries Online Cartographic Resources - http://www.libs.uga.edu/maproom/online/index.html - a map lover's heaven; not limited to Georgia maps
University of Georgia Libraries Hargrett Library Digital Collections - http://www.libs.uga.edu/hargrett/digital/ - this rare book and manuscript collection includes diaries, historic maps, images, and broadsides, history of UG, yearbooks, SE Native American documents, and much, much more! Part of the larger collections of Hargrett Library, some of which are also online.
University of Georgia Libraries Richard B. Russell Library Digital Collections - http://www.libs.uga.edu/russell/collections/digital.shtml - editorial cartoons, vintage baseball cards, American Turpentine Farmers Association Minute Books (1936 - 1999)
Valdosta State University Archives and Special Collections - http://www.valdosta.edu/library/find/arch/index.shtml - yearbooks, Valdosta Daily Times (with searchable database for births, deaths, weddings, and engagements), image collection, local history
Atlanta History Center - http://www.atlantahistorycenter.com/ - while there is not a lot online, there are great descriptions, with photographs, of the collections on hand: Civil War & Military History; Genealogy & Family History of the SE US; Southern Architecture, Decorative Arts, and Design; Southern Garden History/Cherokee Garden Library (includes digital newsletter); you can also check out historic homes and the museum collections; also check out the Franklin Garrett Necrology Database (white males 21 and over - 163,000 entries)
Clarke-Oconee Genealogical Society - http://www.rootsweb.ancestry.com/~gacogs/ - transcribed church, court, military, school, slavery, and tax records
DeKalb History Center Online Research Databases - http://research.dekalbhistory.org/online_databases.asp - databases for the following DeKalb County records: cemetery, marriage, freedman, land and land lotteries, 1870 & 1910 Census, Confederate, superior court, wills, and militia distric map
East Central Georgia Regional Library African American Funeral Programs - http://funeral.galileo.usg.edu/funeral/ - "online collection consists of over one thousand funeral programs ranging from 1933 to 2008 (with the bulk of the collection beginning in the 1960s)"
East Georgia Genealogical Society - http://www.rootsweb.ancestry.com/~gaeggs/ - family Bibles, wills, list of tax defaulters, Oglethorpe County index to estate files, Jackson County pauper farm records, Gwinnett County inferior court minutes 1820-1832
Morgan County Marriage Records - http://www.uncleremus.org/MMR/MMRsearch.html
Troup County Archives - http://www.trouparchives.org/ - cemetery, naturalizations, and soldiers databases; digital archvies project includes marriage an deed records, photo database and oral histories; online newsletters
Wilkes County Deaths 1919-1930 - http://www.giddeon.com/wilkes/vitals/deaths/index.shtml