networking device SIM note

For building a Lab consist of number of networks and cloud related products, i a am looking for some Router softwares which can connect different networks as the real router doing, There are some reference link below:

Cisco CSR1000v For Home Labs
http://www.fryguy.net/2013/12/27/cisco-csr1000v-for-home-labs/

Cisco CSR1000V vs the Fabled IOU
http://lamejournal.com/2013/12/28/cisco-csr1000v-vs-fabled-iou/

How to upgrade Titanium VMware image to 6.1.1

http://51sec.blogspot.hk/2013/03/how-to-upgrade-titanium-vmware-image-to.html