It wasn't that long ago when AEC firms relied on messengers and overnight delivery to exchange voluminous documents with clients and collaborators. The advent of high-bandwidth electronic data transfers and cloud storage has made the process largely a secure, point- and-click process, helping to expedite reviews and updates while saving money and more than a few trees.

A number of file-sharing/storage services have emerged to serve firms of all sizes and needs. The comparisons at right are based on both free and paid plans targeted at business clients. A wide range of user, administration and collaboration features are available with most services, as are customizable solutions for high- volume and enterprise-level customers. Check out a comparison chart at left.