Michael Kilkelly, RA, is a principal at Space Command in Middletown, Conn. Prior to founding the firm in 2012, he was an associate at Gehry Partners. He received his B.Arch from Norwich University and M.S. in design and computation from MIT. Michael writes about design and technology at ArchSmarter.com.
With technology becoming an increasingly significant expenditure, here are several free, open-source options suitable for the design workflow.