As far as the Christian missionaries are concerned, nothing is spared that is related with Islam, whether it is the Qur'an or the ḥadīth or anything else. Everything needs to be attacked. This page deals with the refutation of the claims of the Christian missionaries and others about the ḥadīth.
Science Of Ḥadīth
Ḥadīth & Its Origins
A Brief History Of Ḥadīth Collection And Criticism
This is a lecture given by Dr. Jonathan Brown, a young, eloquent western ḥadīth scholar at University of Washington where he works as an Assistant Professor. In this lecture, he briefly discusses the history of ḥadīth collection, its criticism and the evolution of western ḥadīth scholarship from Goldziher, Schacht, Juynboll to Motzki. A lot of misconceptions about ḥadīth are clarified in this lecture.
On The Nature Of Ḥadīth Collections Of Imam Bukhari and Muslim
Explosive Increase Of Isnad & Its Implications
On The Transmitters Of Isra'iliyyat (Judeo-Christian Material)
Ḥadīth Criticism
Did al-Ḥajjaj Change The Qur'an?
Manuscripts
PERF No. 731: The Earliest Manuscript Of Malik's Muwatta' Dated To His Own Time
PERF No. 665: The Earliest Extant Manuscript Of The Sirah Of Prophet Muhammad By Ibn Hisham
sumber : http://www.islamic-awareness.org/Hadith/