VMware

Dell Technologies subsidiary VMware’s virtualization software grew popular with IT departments because it reduced the costs of running server farms. But the use of virtual machines also reduces electricity consumption, since not every user has to have his or her own dedicated hardware. In 2016 alone, virtualization lowered CO2 emissions by roughly 76 million metric tons, according to IDC, equal to getting 15 million cars off the road. From 2003 to 2016, use of VMware virtual servers saved a total of 415 million metric tons of CO2, or almost half the pollution caused by U.S. household power consumption in a year.