Some cppurls gleaned from comp.lang.c++.moderated

Documentation Tools 

Autoduck 
DOC++ 
cxref 
c2man 
Cocoon Utilities 
ABC++ 
MkHelp 
ObjectManual 

C++ Standards Stuff 

C++ standards committee 
C++ draft 
C++ draft 
Dinkum C/C++ Library Reference

Templates, standard or otherwise 

Standard Template Library Adaptation Page 
Template-Metaprograms 

Miscellaneous 

C++ Tips and Tricks 
LazyOp 
Comprehensive set of C++ links 
About iostreams
Beyond the ARM
Patterns