Schools Under the Care of Friends, a comprehensive directory for the United States maintained by Friends Council on Education.
Quaker Schools Worldwide, a list maintained by Friends School Saffron Walden. (This list is only partial for the U.S., but likely to be complete for Great Britain.)
Friends Colleges in the United States
Friends Retirement Services in the United States
Quakerbooks.org, an online bookstore of Friends General Conference.
Quaker Bookstores, a list posted by Quakers Uniting in Publications.
Quaker Periodicals, a list maintained independently by Russell Nelson.
Quaker Theology, an online journal published by Quaker Ecumenical Seminars in Theology (QUEST).
Many can be found through the webpages of QUIP (Quakers Uniting in Publications).
Friends Libraries in the United States and England
Quaker Camps in the U.S. and Canada
List of Quaker camps maintained by the Quaker Information Center.