My past online tutoring experiences have been with a company called SolveIT and the latest one with Knack Tutoring through the Texas Retired Teachers Foundation.
I love to tutor one-on-one! A lot of good correct information is passed along about math in that type of tutoring. That insures students really understand and can learn to not be afraid of math.
I have tutored math many years and find online tutoring very beneficial and convenient for both the tutor and the student. It is non-threatening for the student, who is trying to learn or relearn math.