I use Resolume for fun on a Mac, and I couldn't find any decent alternative. I also use HeavyM, which is pretty good, also on a Mac and cheaper, but while it does support VJ use case, it's more designed around projection mapping.
Piece of advice: if you want to buy Resolume (and I do recommend it, it's fantastic): the only discount they do all year is on Black Friday, 50% off. So that is THE day to buy a license. And if you happen to be a student or teacher of a related field (or know anyone who is), you can get an additional 50% on that, and buy it for 25% of the total price.
Piece of advice: if you want to buy Resolume (and I do recommend it, it's fantastic): the only discount they do all year is on Black Friday, 50% off. So that is THE day to buy a license. And if you happen to be a student or teacher of a related field (or know anyone who is), you can get an additional 50% on that, and buy it for 25% of the total price.