Black Flags and Social Movements: A Sociological Analysis of Movement Anarchism by Dana M. Williams covers transnational Anarchist organizations.
A little less empirical than I was hoping, the book still does provide some worthy information.
ABBREVIATIONS
AFA Anti-Fascist Action
AFO anarchistic franchise organization
ALF Animal Liberation Front
APOC Anarchist People of Color
ARA Anti-Racist Action
ASN Anarchist Studies Network
ATTAC Association pour la Taxation des Transactions financières et pour l’Action Citoyenne
AYP Anarchist Yellow Pages
BAS “Big Anarchist Survey”
BBB Biotic Baking Brigade
CIRCA Clandestine Insurgent Rebel Clown Army
CM critical mass
CNT Confederación Nacional del Trabajo
CW Catholic Worker
DIY do it yourself
EF! Earth First!
ELF Earth Liberation Front
FAI Federación Anarquista Ibérica
FBI Federal Bureau of Investigation
FNB Food Not Bombs
G8 Group of 8
HDI Human Development Index
HNJ Homes Not Jails
IBL International Blacklist
IMC Independent Media Center
IMF International Monetary Fund
IWA International Workers’ Association
IWPA International Working People’s Association
IWW Industrial Workers of the World
NAACP National Association for the Advancement of Colored People
NAASN North American Anarchist Studies Network
NEFAC Northeastern Federation of Anarchist Communists NGO non-governmental organization
NSM new social movement
NYT New York Times
PO political opportunity
POUM Partido Obrero de Unificación Marxista
RABL Revolutionary Anarchist Bowling League
RMT resource mobilization theory
SM social movement
SMO social movement organization
WOMBLES White Overalls Movement Building Libertarian EffectiveStruggles
WS world-system
WUNC worthiness, unity, numbers, commitment WVS World Values Survey