Agency for Toxic Substances & Disease Registry American Academy of Allergy, Asthma & Immunology
American Association for Cancer Research
American Academy of Clinical Toxicology
American Board of Toxicology (ABT)
American Board of Veterinary Toxicology (ABVT)
American College of Allergy, Asthma & Immunology
Association of European Cancer Leagues
Association of Inhalation Toxicologists
American College of Toxicology
Environmental Mutagen Society
European Centre for Ecotoxicology and Toxicology of Chemicals
European Society of Toxicologic Pathology (ESTP)
In vitro Society of Toxicology (IVTS)
International Academy of Toxicologic Pathology (IATP)
International Neurotoxicology Association (INA)
International Society for the Study of Xenobiotics (ISSX)
International Society of Regulatory Toxicology and Pharmacology
International Union of Toxicology (IUTOX)
INVITROM (Dutch-Belgian Society for In Vitro Methods)
Safety Pharmacology Society
Society of Environmental Toxicology and Chemistry
Society of Forensic Toxicologists
Society of Toxicology (USA)
Society of Toxicologic Pathologists
Teratology Society
The International Association of Forensic Toxicologist (TIAFT)

Regulations and Guidelines

EU-ECB (Europen Chemicals Bureau)
ECVAM (European Centre for Validation of Alternative Methods)
EPA Final Guidelines
FDA Guidance Documents
ICVAM (The Interagency Coordinating Committee on the Validation of Alternative Methods)
OECD Guidelines

Government sites

Center for the Evaluation of Risks to Human Reproduction (from NTP)
Centers for Disease Control and Prevention
Environmental Protection Agency (EPA)
European Food Safety Authority (EFSA)
Food and Drug Administration (FDA)
Interagency Coordinating Committee on the Validation of Alternative Methods
International Program on Chemical Safety (IPCS)
National Center for Environmental Research
National Institute for Occupational Safety and Health (NIOSH)
National Institute of Environmental Health Sciences (NIEHS)
National Institutes of Health (NIH)
National Library of Medicine
National Science Foundation (NSF)
National Toxicology Program (NTP)
Risk Assessment Information System (RAIS)

Other sites of interest

American Association for the Advancement of Science (AAAS)
Association of Assessment and Accreditation of Laboratory Animal Care International
Centre of Documentation, Research and Experimentation omn Accidental Water Pollution EURO-Lex (The portal of the European Union Law)
European Chemical Industry Council
Federation of American Societies for Experimental Biology (FASEB)
The World Academy of Science

Faithful summaries of scientific consensus documents on Health and the Environment

International Society for Exposure Analysis
Organisation for Economic Cooperation and Development (OECD)
Society for In Vitro Biology (SIVB)
ToxPortal (a gateway to various toxicology sites)
World Health Organization
CORDIS (Community Research & Development Information Service) database (a resource and discussion forum for Pharmacokinetic Modelling and addresses issues)
International Life Science Intitute (ILSI)
Occupational Health and Safety Research Institute (IRSST)
Toxicology Education Foundation (video "Is it safe")
The Toxicology Forum