MIT and Atlantic International University offer free online algebra courses at the college level. MIT offers Linear Algebra based on different course dates, and Udacity's course is titled "College Algebra: Bringing Symbols to Life."
All of MIT's courses contain syllabuses, course formats, exams and other course materials outlined, as well as instructors for the courses. MIT's algebra courses also have study groups that can be consulted for problems encountered during the course. MIT shows different versions of the same course in the "Other Versions" tab on the course's main page. Udacity's course is offered at the student's own pace, so that the student can attend to other responsibilities during their study time.