As one of the most popular mathematics courses offered at the university, college algebra and precalculus are covered in many open textbooks, all of which are of roughly similar quality. As such, any selection will be somewhat arbitrary because individual faculty will have differing opinions according to their teaching styles and priorities. These textbooks also come in different versions (college algebra, precalculus, or algebra-trigonometry), which are essentially the same core text. With that in mind, College Algebra, by Carl Stitz and Jeff Zeager, can be considered a strong alternative to OpenStax for algebra. Other textbooks of note in this category are Precalculus: An Investigation of Functions, by David Lippman and Melonie Rasmussen, and Modeling, Functions, and Graphs: Algebra for College Students by Katherine Yoshiwara.