On the 
Wiki main page the supported compiler list on the bottom right quadrant of the page has the following:
BAD Links    MinGW GCC (incl. G77) (Win32)       : Forwards to hijacked site
    Apple GCC (Xcode) (Mac OS X)        : Page not found 
    OpenWatcom (Win32)                  : 404 Not Found
    GDC D Compiler                      : loads, but old site and new site gone
Suspect Downloads on linked page:    Microsoft Visual C++ Toolkit 2003 (Win32)   : Download links do not link to MS
Working Links    GNU GCC (incl. G77) (Linux)
    MSP430 GCC (Win32)
    TriCore and PowerPC GCC (Win32, Linux)
    Microsoft Visual C++ 2005 (Win32)
    Borland's C++ Compiler 5.5 (Win32)     NOTE: slow
    DigitalMars C/C++ (Win32)
    Intel C++ compiler (Win32)
    Small Device C Compiler (SDCC)
    Digital Mars D
    LLVM D Compiler
Can someone who has WIKI change privileges please update and fix the links with issues.