What are some alternatives?
When comparing Intelistyle and Virtusize, you can also consider the following products
Bodilove - Super Fast Fashion at Affordable Prices
True Fit - Virtual Fitting
ASOS - Online Shopping for the Latest Clothes & Fashion
Metail - Metal with Swift Metal (not Metail) is a low-level API from Apple that combines OpenGL and OpenCL into a single interface.
Stylr - Find the fashion you love in the stores around you.
Fit Analytics - Fit Analytics provides the size recommendation engine for ecommerce vertical.