Ethics: Downloadable plain text e-text from Project Gutenburg.
Improvement of the Understanding: Downloadable e-text from Project Gutenberg.
Spinoza according to Duff: Contains excerpts from "Spinoza's Political and Ethical Philosophy," by Robert A. Duff, Glasgow 1903 (reprinted 1970). Part of an Advayavada Buddhism web presence.
Spinoza's Ethics: Brief summary of some aspects of Spinoza's moral philosophy.
Works of Spinoza: Spinoza's writings, including: Ethics, On the Improvement of the Understanding, Theological-Political Treatise, Short Treatise on God, Man, and His Well-Being (Abraham Wolf translation), as well as a selection of Spinoza's correspondence.