7. Virtual Computer (acquired by Citrix)
CEO: Dan McCall
Virtual Computer, a Westford, Mass.-based desktop virtualization startup, was acquired by Citrix Systems in May. Virtual Computer uses a VDI offshoot called intelligent desktop virtualization, which moves processing to the endpoint to execute tasks faster and lower reliance on servers in data centers.
Citrix is rolling Virtual Computer's technology into its XenClient hypervisor as part of its XenClient Enterprise edition.
Virtual Computer has raised $21 million in venture capital funding since its founding in 2007.