| Biodiversity | http://www.biodiversityni.com | |
| Bird Watch Ireland | http://www.birdwatchireland.ie | |
| CRANN | http://www.crann.ie | |
| Environment and Heritage Service Northern Ireland | http://www.ehsni.gov.uk/natural/biodiversity | |
| Ireland Eco Tours | http://www.irelandecotours.com | |
| Ireland Wildlife Trust | http://www.iwt.ie | |
| Irish Seed Savers Association | http://www.irishseedsavers.ie/ | |
| Irish Whale & Dolphin Group | http://www.iwdg.ie | |
| Irish Wild Flowers | http://www.irishwildflowers.ie | |
| Leitrim Organic | http://www.leitrimorganic.com/ | |
| Organic Directory for the UK | http://www.whyorganic.org/involved_organicDirectory.asp | |
| Quercus | http://www.quercus.ac.uk | |
| The Golden Eagle Trust Ltd. | http://www.goldeneagle.ie | |
| The Local Planet | http://localplanet.ie/ | |
| The Tree Council of Ireland | http://www.treecouncil.ie | |
| WWOOF | http://www.wwoof.org.uk/ | |
