Compare Single Board Computers

Benchmarks are fine, but the one thing that matters for me the most and is not usually shown in such filtered lists is the software support (for me Linux). Does it run with a main line kernel? What is the latest kernel version supported? Is there a non-vendor distribution available for it? This also doesn't seem to cover that angle.

This is certainly easier than trying to use a search engine to find comparison benchmarks or feature lists for SBCs. Bookmarked!