The Catholic Encyclopedia
Comprehensive reference work - contains, amongst many other things, comprehensive biographies of a large number of saints.
www.secondspring.co.uk
The Chesterton Institute for Faith and Culture (incorporating the former Centre for Faith and Culture), which is based in Oxford.
The International Centre of Newman Friends
The Sisters of The Work are the custodians of the College at Littlemore, where Newman was received into the Church in 1845.
Hagiography Circle
An interesting site with much information about new saints, and the causes for canonisation and beatification of other men and women.