Kathmandu Environmental Education Project: A non governmental organization promoting "minimum impact trekking", to minimize environmental damage caused by eco-tourism. Contains a mission statement, news, history, programs, photo gallery and a travel guide.
The Himalayan Explorers Club: Provides information and specialized services for trekkers in Nepal. Contains a profile, news, services overview, publications, FAQs and links to other sites of interest.
Treknepal.org: Charity offering interactive CD-based guide to trekking in Nepal. Offers around 1000 original images, 14 detailed treks.