In April 2014, I found a tessellation of the plane which uses two kinds of octagons — both types equilateral, but only one type regular.
Now, I have found two more ways to tessellate a plane with octagons, and these octagons are also equilateral. However, in these new tessellations, only one type of octagon is used. One of them appears below, twice (the second time is with reversed colors), and the other one appears, once, in the next post.