The confessingbaptist posted a link to Keith Throop’s blog about some useful free resources for e-sword:

http://confessingbaptist.com/new-e-sword-version-free-keith-throop/

http://confessingbaptist.com/e-sword-free-modules/

Keith Throop’s post summarizing some useful free e-sword resources to download such as commentaries:

http://reformedbaptist.blogspot.com/2013/04/lots-of-free-modules-for-e-sword.html