[bhaisaab]

Not sure if people know about Apache CloudStack or not, it has all those IaaS feature and it just works with various basic to advance networking models.

[andyidsinga]

Apparently CloudStack "lost" to OpenStack ( see: http://www.infoworld.com/article/2608995/openstack/cloudstac... ). I've also heard this sentiment in my admittedly openstack biased circles.

That said, I'm not suggesting it should not be considered.

[nl]

It lost out in getting vendor support from lots of different big vendors. OTOH, many hosting environments find it more useful. (It used to be a Citrix product which might explain the more unified architecture it has).

[retrack]

There are case studies also: https://cwiki.apache.org/confluence/display/CLOUDSTACK/Case+...

[iwince]

It looks like they have a pretty good user list going:

http://cloudstack.apache.org/users.html