Probably the current code uses some Haiku specific APIs. You could however contact stippi at Yellowbytes and see if they still can offer licenses. Their website is here: YellowBites - WonderBrush but the links to buy licenses are dead.
For Pixel32, the author’s website says it is now owned by a Globell B.V. company, for which I cannot find any website: http://www.kanzelsberger.com/pixel/?page_id=6
As for Refraction, we had attempted a crowdfunding campaign to get it opensourced, but it reached nowhere near the 10000€ that the author wanted to do it: Open-sourcing Refraction image editor