About eSUB Construction Software: We built eSUB out of a 30-year commitment to the Subcontractors who toil in the field and often have to haggle for payment. eSUB is a tool for Subcontractors to increase communication and coordination, so they can make more money on every project. Through the years, our competitors have focused on the needs of General Contractors and Owners. We’ll let them handle those folks. Our mission is to provide the most comprehensive and easy to use mobile project management solution on the market, tailor