Vegas Smart Adaptive Deinterlace (understandably slow with my Intel graphics)

VideoRedo Smart Deinterlace (which I believe is software only)

Handbrake Decomb, (one of the best in previous tests)

And for the sake of completeness, the venerable EEDI2, which is equally slow, but not better than Vegas Smart Adaptive.

Note: you have to set project properties to Progressive for Vegas' Smart Deinterlace to be active).