This site is an excellent place to start researching the broad topic of engineering ethics. It is maintained primarily for members of the National Society of Professional Engineers.
This technical and professional society maintains a Code of Ethics and takes disciplinary action if warranted. The organization endeavors to educate its members and the public on ethical issues.
IEEE is a technical and professional organization that is very active in ethical issues. The IEEE Ethics Committee home page contains the IEEE Code of Ethics, mailing lists for ethical guidelines and discussions, an ethics question roundtable, some guidelines for resolving ethical issues, and links to ethics pages, organizations, cases, and articles. The site will most likely be of particular interest to practitioners and students of electrical engineering, but the link cases, cases, and discussions cover a wide range of engineering related ethics.
The Ethics Bowl is conducted annually in Cincinnati in conjunction with the annual meeting of the Association for Practical and Professional Ethics (APPE). This site explains how the bowl is played and judged, and gives links to past game questions.
Texas A&M, a leading school in engineering ethics, has created a course in engineering ethics, as well as developed materials for introducing ethical issues into undergraduate engineering courses.
The Markkula Center for Applied Ethics is an excellent source of general ethical information. The site has ethical case studies ranging from business applications to academic ethics. The site also has codes of ethics, links to hundreds of other ethics sites, book and article of the month clubs, and links to publications like Ethics Now Online.
The site is devoted to the board topic of ethics in physical sciences, especially related to chemistry.
The Society for Philosophy and Technology is an independent international organization that encourages, supports and facilitates philosophically significant considerations of technology.
The mission of the Centre is to bring moral philosophy into the public domain by advancing research in applied ethics, supporting courses with a significant ethical component and acting as a community resource. The Centre provides opportunities for academics, practitioners and others to engage in the systematic and rational reflection on significant moral issues of the day.