Builk.com is a community platform for the construction industry that connects large contractors and SME contractors through a network. It provides features like activity feeds, user management, budgeting, purchasing, invoicing, reporting, and search for contractors. The platform aims to streamline financial and accounting workloads while expanding the user network. It offers mobile and web interfaces for field issue tracking, jobsite calendars, knowledge management, and communication between owners, contractors, designers, consultants, suppliers, and subcontractors.