Free bootstrap themes

Since I recently got into Bootstrap, I've been shopping round for some good themes. Here is what I have found so far on the free side of the fence:

• http://www.bootstrapstage.com/free-themes/
• http://www.bootstrapstage.com/merlin/
• http://halibegic.com/projects/merlin/

I'll grow this list as I discover new and appealing themes.