Most of time we need more than one operating system and that’s where vmware comes to help. Though VMware Workstation is a paid software but VMware player is free. Here are the instructions of how to install vmware on Fedora 21.
Here is another blog post which helps install vmware on Fedora and Ubuntu. In this blog instructions are given for Redhat and Debian, so point to note here is that instructions for Redhat will work on Fedora and instructions for Debian will work on Ubuntu.
After going through above steps if you could run vmware properly then no problem.
When I installed VMware 10 on Fedora 21 I had problems so to address these issues, here is the solution. Visit this site and read for the Fedora 20 section and complete both the steps mentioned over there.