Builk.com is a freemium professional social network connecting construction professionals through their business activities e.g. budgeting, job costing, purchasing, invoicing and site collaboration. Construction companies work for FREE and connect to their suppliers, designers and customers easier.
In addition, Builk it allows construction companies to manage their construction projects through the tool by tracking inventory and gathering construction information.
Founded in 2009, they have thousands of small to medium construction companies on their platform.