Beyond preaching, Fox spent decades organizing the movement institutionally, establishing the system of local and regional meetings for business and worship that still structures Quaker practice, and he travelled extensively to visit and strengthen these meetings, including journeys to Ireland, the Caribbean and the American colonies in the 1670s. He married Margaret Fell in 1669, herself a central organizer of early Quakerism and the author of an influential early defense of women's right to preach, and their partnership did much to give the young movement administrative stability.
Fox died in London on 13 January 1691. His Journal, compiled from his own manuscripts and papers and first published in 1694, three years after his death, became one of the central texts of Quaker spirituality and remains a primary historical source for the movement's first decades. The Religious Society of Friends he founded rejected sacraments, formal clergy and set liturgy in favor of unprogrammed worship grounded in silence and the conviction, carried forward from Fox himself, that the divine light is present in every person. The unprogrammed silent worship Fox's early followers practiced, waiting together for the spirit to move someone to speak, remains the core form of Quaker meeting for worship among unprogrammed Friends today, a direct continuation of the practice Fox himself established in the movement's first gatherings.