PlanGrid

It features version control and collaboration tools such as field markups, progress photos and issues tracking.

[6][7][8] The company's board of directors included former Salesforce COO George Hu,[9] Sequoia Capital Partner Doug Leone,[10] and former Autodesk CEO Carol Bartz.

[13] PlanGrid's CEO, Tracy Young, was named to Fast Company's "Most Creative People in Business" in 2015.

[14] The company's seed-stage investors include Y-Combinator, Sam Altman, Paul Buchheit and 500 Startups.

[16] In November 2015, PlanGrid raised a $40 million Series B led by Tenaya Capital.