R programming course from John Hopkins Uni. in Coursera [1] also uses swirl. 
[1] <a href="https:&#x2F;&#x2F;www.coursera.org&#x2F;learn&#x2F;r-programming&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.coursera.org&#x2F;learn&#x2F;r-programming&#x2F;</a>