Other
Matthew Henry's Commentary: Ecclesiastes 1
This site is a discussion by Matthew Henry on the book of Ecclesiastes. It includes the main themes of the book and its religious significance. He then gives a chapter by chapter "commentary" on the book.
Luther Seminary
Bible Tutor: Ecclesiasticus
This site from The Bible Tutor provides information and briefly discusses the author and contents of the Book. Links are provided for information on specific portions of the text, along with a picture to illustrate one of the verses.