Boscovich on Point-like Atoms: Excerpts from the Child translation of Boscovich's 1763 classic Theory of Natural Philosophy.
Catholic Encyclopedia: Ruggiero Giuseppe Boscovich: Detailed article by Adolf Muller.
Conspiracy of Unified Field Theory: Contends that Boscovich's theories played a key role in the foundations of Einstein's vision of a unified field theory. Part of a larger site arguing that mainstream science is a religion. [English, Lithuanian]
Jesuit Scientists: Roger Joseph Boscovich, S.J.: Illustrated profile of this 18th-century polymath.
MacTutor History of Mathematics: Ruggero Giuseppe Boscovich: Biographical article, with links to related topics, bibliography and a poster.
Wikipedia: Rudjer Josip Boscovich: Article drawn from the 1911 Britannica.