Coursera 5-7 hours a week , 11 weeks long 5-7 hours a week , 11 weeks long

edX 6-8 hours a week , 9 weeks long 6-8 hours a week , 9 weeks long

edX 10-15 hours a week , 13 weeks long 10-15 hours a week , 13 weeks long

Coursera 6-12 hours a week , 6 weeks long 6-12 hours a week , 6 weeks long

Coursera 4 weeks long 4 weeks long

edX 3-6 hours a week , 12 weeks long 3-6 hours a week , 12 weeks long

Coursera 7 hours worth of material , 5 weeks long 7 hours worth of material , 5 weeks long

Udacity 6 hours a week , 16 weeks long 6 hours a week , 16 weeks long

Udacity 8 weeks long 8 weeks long

Udacity 4 weeks long 4 weeks long

edX 7-10 hours a week , 5 weeks long 7-10 hours a week , 5 weeks long

Coursera 12-15 hours a week , 8 weeks long 12-15 hours a week , 8 weeks long

Udacity 8 weeks long 8 weeks long

FutureLearn 3 hours a week , 6 weeks long 3 hours a week , 6 weeks long

Udacity 8 weeks long 8 weeks long

Coursera 6-12 hours a week , 6 weeks long 6-12 hours a week , 6 weeks long

Coursera 8 hours worth of material , 4 weeks long 8 hours worth of material , 4 weeks long

FutureLearn 3 hours a week , 4 weeks long 3 hours a week , 4 weeks long

Coursera 2-3 hours a week , 8 weeks long 2-3 hours a week , 8 weeks long

Udacity 2 weeks long 2 weeks long

Udacity 16 weeks long 16 weeks long

Udacity 3 weeks long 3 weeks long

Udacity 3 weeks long 3 weeks long

Udacity 3 weeks long 3 weeks long

Udacity 2 weeks long 2 weeks long

Udacity

edX 2-4 hours a week , 6 weeks long 2-4 hours a week , 6 weeks long

FutureLearn 3 hours a week , 2 weeks long 3 hours a week , 2 weeks long

Coursera 11 hours worth of material , 4 weeks long 11 hours worth of material , 4 weeks long

Udacity 12 weeks long 12 weeks long

Coursera 4-10 hours a week 4-10 hours a week

EdCast 4-8 hours a week , 9 weeks long 4-8 hours a week , 9 weeks long

Coursera 4-10 hours a week , 8 weeks long 4-10 hours a week , 8 weeks long

Coursera 7-10 hours a week , 12 weeks long 7-10 hours a week , 12 weeks long

edX 16 weeks long 16 weeks long

Coursera 8-10 hours a week 8-10 hours a week