Inorganic Chemistry Wikibook
Frustrated by the lack of inorganic textbooks that really fit my materials-oriented first-semester inorganic course, I embarked on a project with my students to create a free online textbook. The students did most of the heavy lifting, and I'm pleased to report that the next class to use the book rather liked it. It is still a work in progress, but I would like to encourage everyone to check it out and edit it if the spirit moves you.