BlueRoads, the maker of software to help businesses manage their vendors and resellers, has raised $6 million in a fifth round of venture funding. The round was led by ZenShin Capital Partners, with participation from ArrowPath Venture Capital, Cardinal Venture Capital and El Dorado Ventures.

The San Mateo, Calif. startup says its software is used by customers like Xerox and NetApp to help them participate in the sales and marketing of their vendors. BlueRoads raised $9 million last September; the latest round brings its total funding to $31 million.