Alternative Energy, www.alternativeenergy.com/jobs
Commongood Careers, www.cgcareers.org (occasional postings by environmental organizations)
Craig's List, www.craigslist.org
Eco Employ, www.ecoemploy.com
Environmental Career Opportunities, www.Ecojobs.com
Environmental League of Massachusetts, www.environmentalleague.org/jobs/jobs.html
Green Biz, www.greenbiz.com/jobs
Green Dream Jobs, www.sustainablebusiness.com/jobs
Green Energy Jobs, www.greenenergyjobs.com (mostly international jobs- great career information)
Grist, www.jobs.grist.org
Idealist, www.idealist.org (a nonprofit job and organization listing, including environmental organizations)
Just Means, www.justmeans.com
MA Green Jobs Coalition, www.groups.google.com/group/ma-green-jobs-coalition
MonsterTRAK, www.monstertrak.monster.com/greencareers/
National Wildlife Federation Career Gateway, www.nwf.org/careergateway
Net Impact, www.netimpact.org (click on Career Center; requires membership)
Nonprofit Jobs Cooperative, www.newenglandjobs.org
The Environmental Career Center, www.environmentalcareer.com
Treehugger, www.jobs.treehugger.com