I checked every whitelisted project using their get_project_config.php, and here what I found.

Some unusual things

Not all project that support mac also support 32-bit architecture for mac

There are exists projects for OpenBSD and FreeBSD

[email protected] supports SPARC Solaris and Linux on PlayStation 3

Amicable numbers supports only 64-bit hardware

[email protected] doesn't support AMD/ATI GPU for 32-bit system

Projects that use VirtualBox

[email protected] (for 64-bit linux, windows and mac)

GPUGrid (only for 64-bit linux)

LHC (for 32-bit windows and linux, 64-bit windows, linux and mac)

BSD support

[email protected] (FreeBSD 32 and 64-bit)

LatinSquares (FreeBSD 32 and 64-bit)

LHC (FreeBSD 64-bit and OpenBSD 64-bit)

NFS (FreeBSD 64-bit)

ARM support

Rasberry Pi support

I have Raspberry Pi 2, so I check this:

Unusual hardware

Table form