I think you're asking a jaded audience here. If you are asking, do they work as well as anabolic steroids, the answer in a resounding no. If you are asking if they work at all, I would have to say yes.
I have had some benefit while using some of the topical pro-hormone sprays before. The only ones that felt like they worked(just my opinion), was Bio-Test's Androsol and ErgoPharms Andro-spray.
I had gradual strength increases and gained about 5 lbs over a 4 week period. So , as you can see, the gains (both in strength and weight) were not dramatic, but, since I did not change my caloric intake, workout frequency/duration or intensity, I believe these gains to be real. Plus they seemed to make me horny as hell.
I have not had the same luck (i.e. almost no cumulative gains) with most other pro-hormones.