Founders: Tracy Young, Kenny Stone, Ralph Gootee, and Ryan Sutton-Gee
Funding: Since it was founded in 2011, PlanGrid has raised $66 million.
What it does: PlanGrid provides software to help construction companies execute building companies.
Why it's taking off: PlanGrid has plans to eliminate the need for paper blueprints. It's received interest from prominent venture capital funds like Sequoia Capital, Tenaya Capital, and Founders Fund.