AVERT is an international HIV and AIDS charity based in the UK.  The charity works to combat HIV transmission, particularly in countries where there is a particularly high rate of infection.  It also funds research into AIDS treatment and provides HIV and AIDS education worldwide.

The Dr Hadwen Trust is the UK's premier medical research charity, funding exclusively non-animal techniques to replace animal experiments.  The Trust uses these techniques to research treatments for a range of conditions, from Asthma to Breast Cancer.

Greenpeace is the world's leading independent organisation dedicated to defending the oceans, promoting green energy, working for disarmament and peace, protecting the world's ancient forests and campaigning for sustainable agriculture.

Human Rights Campaign is the US's largest civil rights organisation working to achieve gay, lesbian, bisexual and transgender equality, through advocacy, research, education and outreach programs.  Excellent website with an extensive amount of up-to-date resources and information.

Lambda Literary Foundation is the US's leading LGBTQ literary organisation, providing resources for writers, readers, editors, booksellers, publishers and librarians.  It conducts annual writers' retreats, publishes the Lambda Book Report and sponsors the annual Lambda Literary Awards.

The Fred Hollows Foundation is inspired by work of the late Professor Fred Hollows.  Operating in over twenty countries world-wide, the charity works to prevent avoidable blindness and restore vision to those who have lost their sight needlessly.

The Humane Society of the United States has worked hard since 1954 to promote the protection of all animals.  They work to reduce suffering by advocating for public policies to protect animals, investigating cruelty, educating the public and conducting hands-on programs.