C++ FAQ Celebrating Twenty-One Years of the C++ FAQ!!!
(Click here for a personal note from Marshall Cline.)
Section 38:
[38.5] Where can I get information about the C++ compiler from {Borland, IBM, Microsoft, Sun, etc.}?

In alphabetical order by vendor name:

[If anyone has other suggestions that should go into this list, please let me know; thanks; (cline@parashift.com)].