An incomplete list, and many of these sites have their own series of links. Particularly underrepresented are state and federal government resources. Please include suggestions as you see fit!
News
The Times Picayune: http://www.nola.com/
Gambit Weekly: http://www.bestofneworleans.com/
New Orleans City Business: http://www.neworleanscitybusiness.com/
New Orleans Indy Media: http://neworleans.indymedia.org/
Research & Information
The Greater New Orleans Data Center: http://www.gnocdc.org/
The Brookings Institution Metropolitan Policy Program - Katrina Index: http://www.brookings.edu/metro/katrina.htm
Katrina Information Network: http://www.katrinaaction.org/
Flooding Interactive Map: http://www.nola.com/katrina/graphics/flashflood.swf
New Orleans Network: http://www.neworleansnetwork.org/
Bureau of Government Research: http://www.bgr.org/
New Orleans Small Business Resource Guide: http://www.nolabusinessresourceguide.org/
LA Rebuilds: http://www.louisianarebuilds.info/
Foundations, NGOs & External Agencies
Greater New Orleans Foundation: http://www.gnof.org/
Unitarian Universalist Service Committee: http://www.uusc.org/katrina/index.html
Mercy Corps: http://www.mercycorps.org/topics/hurricanekatrina
Oxfam America: http://www.oxfamamerica.org/whatwedo/emergencies/hurricane_katrina
PolicyLink: http://www.policylink.org/Communities/Louisiana/default.html
The Advancement Project: http://www.advancementproject.org/
Foundation for the Mid-South: http://www.fndmidsouth.org/
Catholic Charities: http://www.catholiccharities-no.org/
Friends of New Orleans: http://www.friendsofneworleans.org/
Great New Orleans Fair Housing Association: http://www.gnofairhousing.org/index.htm
Common Ground Collective: http://www.commongroundrelief.org/
Activism & Community-Based Organizations
Housing, Community Development Corporations & Neighborhood Associations
Neighborhood Housing Services of New Orleans: http://www.nhsnola.org/
New Orleans Housing Resource Center: http://www.nolahousingresources.info/
Ujamaa CDC: http://www.ujamaacdc.org/
Providence Community Housing: http://www.providencecommunityhousing.org/
Broadmoor Improvement Association: http://broadmoorimprovement.com/
Neighborhood Empowerment Network Association: http://thinknola.com/wiki/Neighborhood_Empowerment_Network_Association
New Orleans Neighborhood Development Collaborative: http://www.nondc.org/
Bywater Neighborhood Association: http://www.bywater.org/
DeSaix Area Neighborhood Association: http://desaixcorridor.com/
Fauborg St. John Neighborhood: http://desaixcorridor.com/
Gentilly Civic Improvement Association: http://gcia.us/
HollyGrove Neighbors: http://www.neighborhoodlink.com/public/main.html?nneighid=565194218&nsupercity=3477700
Lakeview Civic Improvement Association: http://www.lakeviewcivic.org/
Mid City Neighborhood Association: http://mcno.org/
Northwest Carrollton Civic Association: http://northwestcarrollton.com/
Touro Bouligny Association: http://tourobouligny.com/
Organizing
Survivors Village: http://www.survivorsvillage.com/about.html
C3/Hands Off Iberville/NOHEAT: http://www.c3nola.org/
New Orleans ACORN: http://www.acorn.org/index.php?id=8219
People’s Hurricane Relief Fund: http://www.peopleshurricane.org/
The Jeremiah Group (IAF): http://www.industrialareasfoundation.org/iafaffiliates/iafaffiliatessw.htm
All Congregations Together (PICO LIFT): http://www.actnola.org/
Environment
The Green Project: http://www.thegreenproject.org/
Parkway Partners: http://www.parkwaypartners.com/index.php
Replant New Orleans: http://www.replantneworleans.org/
New Orleans Food & Farm Network: http://www.noffn.org/
Arts, Architecture & Preservation
WWOZ: http://www.wwoz.org/
The Backstreet Cultural Museum: http://www.backstreetmuseum.org/
Preservation Resource Center: http://www.prcno.org/
Tulane UrbanBUILD: http://tulaneurbanbuild.com/
Tulane City Center: http://www.tulane.edu/~tsahome/TulaneCityCenter.html
Ashe Cultural Center: http://www.ashecac.org/
The House of Dance & Feathers:
http://mappinglucy.blogspot.com/2006/08/house-of-dance-and-feathers-and-other.html
and
http://www.projectlocus.org/hodf.htm
Planning
United New Orleans Plan: http://unifiedneworleansplan.com/home2/
Concordia: http://www.concordia.com/home/
Rockefeller Foundation: http://www.rockfound.org/NorthAmerica/Announcement/141
Neighborhoods’ Planning Network: http://neighborhoodsplanning.com/
New Orleans Neighborhoods Rebuilding Plan: http://www.nolanrp.com/
Bring New Orleans Back Commission: http://www.bringneworleansback.org/
Government
City of New Orleans: http://www.cityofno.com/
New Orleans City Council: http://www.neworleanscitycouncil.com/
Lousiana Recovery Authority: http://www.lra.louisiana.gov/
Housing Authority of New Orleans: http://www.hano.org/
Business
Better Business Bureau: http://www.neworleans.bbb.org/
Second Wind: http://www.secondwindnola.org/index.cfm?pagename=homepage
LA Economic Development Agency: http://www.lded.state.la.us/
Legal
From the Lake to the River: http://www.fromthelaketotheriver.org/
New Orleans Legal Assistance Corp.: http://www.nolac.org/
Katrina Legal Aid Resource Center: http://www.katrinalegalaid.org/