eSUB

eSUB is built specifically for commercial subcontractors, and the company is direct about it: there is a reason SUB is in the name. That focus is the whole proposition, because subcontractors work inside someone else's project, where the job is documenting what was asked for, what changed and what it cost, in a form the general contractor will accept.

Its Fusion product links field personnel to the back office, capturing insights that trigger follow-up tasks and routing correspondence to internal stakeholders and the GC. Submittals, RFIs and change orders can be raised straight from the field, which is where the disputes that erode subcontractor margin usually begin. Named trades include concrete, drywall, glazing and steel. Web and mobile experiences are tailored to trade contractors rather than adapted from general-contractor software, which is the practical difference from broader construction platforms.