The consumer is mobile, so why shouldn't the manufacturers be as well? Over the past few years, REPLACEMENT CONTRACTOR'S sister publication, BUILDER, has put together an impressive listing of mobile device applications from building material manufacturers around the country, including a few window makers. Here are five such apps from the biggest names in window manufacturing.

Andersen Windows—This app is ideal for both the consumer and the salesperson. You can browse Andersen products, training materials, and get detailed information about designs. It also includes sizing calculators and warranty information.

Marvin Integrity Windows and Doors—Marvin's app provides information on the manufacturer's Ultrex fiberglass products. Users can access presentations, product catalogs, case studies, and a photo gallery to inspire design ideas.

Milgard Windows and Doors—This app allows users to browse through all of Milgard's product brochures and videos. The video library includes product presentations, installation information, testimonials, and how-to features.

Pella Windows and Doors—Pella's Interactive Literature Library iPad app offers easy-to-understand product information along with videos and photos featuring the manufacturer's products. Users can also learn about the company's history and special features.

Velux Windows—This app gives users the opportunity to view different sizes and configurations of the skylight producer's products. Consumers can load an photograph of their ceiling from their mobile device and see what it would look like with Velux's products.