A Slice of Philosophy: Wittgenstein
Short introduction to life and works of Wittgenstein. List of works of, and secondary literature on, Wittgenstein.
Island of Freedom: Ludwig Wittgenstein
Fan site with brief biography and links.
Journeys In Thought: Wittgenstein
Biography to accompany a BBC Radio Three philosophy series. By Jonathan Rée.
Ludwig Wittgenstein - Philosopher
Impressionistic commentary on Wittgenstein's life, accompanied by relevant quotations from the Tractatus
MacTutor Biography
From the MacTutor History of Mathematics archive. Well referenced.
Wittgenstein, Ludwig Josef Johann
Very detailed biography which quotes from Wittgensteins works. Has links to other sources.