Tamr

Top Executive: CEO Andy Palmer

Cambridge, Mass.-based Tamr developed a data unification system that transforms "dark, dirty and disparate data" from hundreds and even thousands of data sources both inside and outside an organization into clean, connected data.

In March Tamr announced a global reseller agreement with Hewlett Packard Enterprise under which HPE will resell Tamr's data unification product.

Database industry veterans Andy Palmer and Michael Stonebraker started Tamr in 2013.