Ask HN: tools to create feature-level comparison matrices?

We've been using Excel to create feature matrices to compare different tech components, listing both technical features as well as fit to our needs (e.g. using 1-5 stars to indicate how it fits our requirements). We've done this for storage devices, cell phones, and are now considering switching from PC to Mac and are trying to compare across the two. Creating these sheets is time-consuming and brain-deadening, and made me wonder whether there aren't some web-based tools that do this for you (e.g. scrape feature listings for a Dell and a Mac PC to let you compare / contrast). Any ideas?