What do we replace replistor with after it goes end of life

Replistor will be dead in a few years.   What are other products that people are planning to go to?

We use Replistor in a many to one configuration. It backs up our remote plants to one server here which we then back up to tape.

I need network bandwidth throttling. 

I need byte-level data replication to keep the amount of data crossing the wan links down.

We only need to back up windows servers (2003/2008r2) with it.