In recent years, builders have added an important new gadget to their toolboxes: mobile connectivity. With a phone, tablet, or laptop, contractors can access hundreds of applications that help take the work out of constructing a home and running a business. From helping determine local building codes to hailing a Dumpster on demand, these applications can be accessed from anywhere anytime, and most are free.

Click through to learn more about some of BUILDER editors’ favorite apps for construction pros. You can add your own suggestions in the Comments section below.