| Acdi/Voca | 1 |
| African Conservation Experience (ACE) | 3 |
| African Conservation Trust (ACT) | 5 |
| Alliance Abroad (AA) | 7 |
| Amazon-Africa Aid (AAA) | 9 |
| Ambassadors for Children (AFC) | 11 |
| The other Cancun | 13 |
| American Hiking Society (AHS) | 15 |
| It is beauty that transforms the soul | 17 |
| American Jewish World Service (AJWS) | 19 |
| AmeriSpan | 21 |
| Amigos de las Americas | 24 |
| Amizade | 27 |
| Appalachian Mountain Club (AMC) | 30 |
| Appalachian Trail Conservancy (ATC) | 32 |
| ARCHELON, The Sea Turtle Protection Society of Greece | 35 |
| Asociacion ANAI | 37 |
| Asociacion de Rescate de Fauna (ARFA) | 39 |
| Australian Tropical Research Foundation (ATRF) | 41 |
| AVIVA | 43 |
| Azafady | 46 |
| Bangladesh Work Camps Association (BWCA) | 48 |
| Bike-aid | 50 |
| Bimini biological field station | 52 |
| Biosphere expeditions | 54 |
| Blue ventures | 57 |
| Bridges for Education (BFE) | 59 |
| BTCV | 61 |
| Camp AmeriKids | 63 |
| Camphill Special School | 65 |
| Caretta Research Project (CRP) | 67 |
| Caribbean Conservation Corporation (CCC) | 69 |
| Caribbean Volunteer Expeditions (CVE) | 72 |
| Anguilla is a family affair | 73 |
| Catalina Island Conservancy | 76 |
| Catholic Medical Mission Board (CMMB) | 79 |
| Cetacean Research and Rescue Unit (CRRU) | 81 |
| Cheyenne River Youth Project | 83 |
| Child Family Health International (CFHI) | 85 |
| Cholsey and Wallingford Railway | 87 |
| Christian Peacemaker Teams (CPT) | 88 |
| All I ask is that I not become indifferent | 90 |
| Citizens Network for Foreign Affairs (CNFA) | 92 |
| The quest for uniform potatoes | 94 |
| The Colorado Trail Foundation (CTF) | 98 |
| Rolling rocks | 100 |
| Conservation Volunteers Australia (CVA) | 102 |
| Coral Cay Conservation (CCC) | 105 |
| Two dives a day in paradise | 107 |
| Cross-Cultural Solutions (CCS) | 109 |
| Mastering the art of building people | 112 |
| Cultural Destination Nepal (CDN) | 114 |
| Cultural Restoration Tourism Project (CRTP) | 116 |
| Dakshinayan | 118 |
| DELPHIS | 120 |
| Dolphin Research Center (DRC) | 123 |
| Earthwatch institute | 125 |
| Shards, obsidian, and lower blood pressure | 128 |
| Eco-center caput insulae - Beli (ECCIB) | 131 |
| Ecovolunteer program | 133 |
| El Porvenir | 135 |
| Explorations in Travel (ET) | 137 |
| Farm sanctuary | 139 |
| Foundation for Sustainable Development (FSD) | 141 |
| Friends of the Cumbres and Toltec Scenic Railroad | 144 |
| Friends of the Great Baikal Trail (FGBT) | 146 |
| The deepest lake in the world | 149 |
| Friends Workcamp Program, Philadelphia yearly meeting (FWP) | 152 |
| Frontier | 154 |
| Gibbon Conservation Center (GCC) | 156 |
| Gaga for Gibbons | 159 |
| Global Citizens Network (GCN) | 161 |
| We shared more than hammers | 163 |
| Global crossroad | 166 |
| Global Eco-Spiritual Tours (GEST) | 169 |
| Global routes | 171 |
| Global Service Corps (GSC) | 173 |
| Global Volunteer Network (GVN) | 175 |
| Global Volunteers (GV) | 178 |
| Global Works | 181 |
| Globe Aware | 183 |
| GoXplore | 186 |
| Greenforce | 188 |
| Habitat for Humanity International's global village work teams | 191 |
| Health Volunteers Overseas (HVO) | 193 |
| Iko Poran | 195 |
| Insight Nepal | 197 |
| International Cultural Adventures (ICA) | 199 |
| International Executive Service Corps (IESC) | 202 |
| International Otter Survival Fund (IOSF) | 204 |
| International Volunteer Program (IVP) | 206 |
| Involvement Volunteers Association (IVA) | 208 |
| Iracambi Atlantic Rainforest Research Center | 211 |
| i-to-i | 213 |
| Jatun Sacha | 215 |
| Joint Assistance Center (JAC) | 217 |
| Just works | 219 |
| Kokee Resource Conservation Program (KRCP) | 221 |
| Landmark volunteers | 223 |
| La Sabranenque | 225 |
| Madre | 228 |
| Mar de Jade | 230 |
| Medex International (MEI) | 232 |
| Making house calls around the world | 234 |
| Medical Ministry International (MMI) | 238 |
| Mercy ships | 240 |
| Mobility International USA (MIUSA) | 243 |
| Munda Wanga trust | 245 |
| Mun YaWana Leopard Project | 247 |
| Here Kitty! | 249 |
| National Medication Center for World Peace (NMCWP) | 252 |
| Naucrates | 254 |
| New Era Galapagos Foundation (NEGF) | 256 |
| Swimming with sea lions | 258 |
| Oceanic society | 262 |
| Oikos | 264 |
| Operation Crossroads Africa (OCA) | 265 |
| Pacific Crest Trail Association (PCTA) | 267 |
| Passport in time (PIT) | 269 |
| The best of America : hopes, dreams, stories, and freedom | 272 |
| Peace villages foundation | 274 |
| Playing Santa Claus in Venezuela | 276 |
| Peacework | 279 |
| Pina Palmera | 281 |
| Programa Restauracion de Tortugas Marinas (PRETOMA) | 283 |
| Find yourself - wandering | 285 |
| Projects abroad | 287 |
| The funniest and most enriching experience of my life : teaching in Bolivia | 289 |
| ProWorld service corps (PWSC) | 294 |
| Raleigh international | 296 |
| Reef check | 298 |
| Rempart | 300 |
| Royal Tyrrell museum | 302 |
| Senevolu, the Senegalese Association of United Volunteers | 304 |
| Sierra Club outings | 306 |
| Sioux YMCA | 308 |
| Students Partnership Worldwide (SPW) | 310 |
| Sunseed Desert Technology | 313 |
| Swiss Whale Society | 315 |
| Taita Discovery Centre (TDC) | 317 |
| Tethys Research Institute | 319 |
| Tolga Bat Hospital | 321 |
| Transformational Journeys | 323 |
| United Planet | 325 |
| University research expeditions program (UREP) | 327 |
| Visions in action (VIA) | 329 |
| Abayudaya : the Jews of Africa | 331 |
| Vitalise | 335 |
| Volunteer Africa | 337 |
| Volunteers for Outdoor Colorado (VOC) | 339 |
| Volunteers for Peace (VFP) | 342 |
| Volunteers in Asia (VIA) | 345 |
| Wilderness Foundation | 347 |
| Wildlands studies | 349 |
| Winant and Clayton Volunteers | 351 |
| World Challenge Expeditions (WCE) | 353 |
| World Horizons | 355 |
| WorldTeach | 357 |
| World-wide opportunities on organic farms (WWOOF) : United Kingdom and independent | 360 |
| Eating and farming our way through Scotland | 362 |
| World-wide Opportunities on Organic Farms (WWOOF)-USA | 365 |
| Wyoming Dinosaur Center (WDC) | 367 |
| YMCA go global | 369 |
| Young power in social action (YPSA) | 371 |
| Youth international | 373 |
| AmeriCorps | 379 |
| Jesuit Volunteer Corps (JVC) | 381 |
| Peace corps | 383 |
| Snapshots from Paraguay | 386 |
| Teach for America (TFA) | 390 |
| Voluntary service overseas (VSO) | 393 |
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