There isn´t any tool offering similar functionality. There is a VST called "Granite" by New Sonic Arts, which is also a very useful granular processor. But it doesn´t offer the same wide spectrum of possibilities to manipulate the sound. And there are a lot of granular processor, which follow another philosophy, meaning they deliver nice and beautiful effects, but these effects are far less predictable and are based on fixed algorithms under the hood. And as you don´t know these algorithms, it is impossible to "compose" (as you would compose a piece of music) a sound that precise as you can do with CrusherX. This piece of software is unique and outstanding at the moment.
And here is part 3 of my treasure hunt (it is without any granular technology this time).
Part 3 of my treasure hunt doesn´t lead me far away. My journey ends in my kitchen, where I find some interesting things to make excellent sounds.
Enjoy your day!