Can anyone lead me to some software that replicates the OP-1's capabilities?

I'm a complete beginner to creating digital music and have no idea what any of the software does.

I would buy an OP-1 as I love the performance aspect of it and the sampling but until I take the plunge, I'll need some software.

I have Reaper (DAW), is there anything else I need to replicate the OP-1's capabilities?

Thanks and sorry if this is in the wrong place but I thought you guys would know.