Abu Al-Nasr Al-Farabi: Extensive information on the work and legacy of this medieval Arabic philosopher.
Commentary on the Treatise of Zeno: Translation of this short work by al-Farabi, with commentary and English text by Joseph Kenny.
Memoirs of Popular Delusions: Alfarabi: Passage from this compendium by Charles Mackay.
Muslim Philosophy: al-Farabi, Abu Nasr: Article discussing his life and teachings on metaphysics, epistemology and politics.
Wikipedia: Al-Farabi: Brief entry from this openly-edited reference work.