Yes, this loooong-awaited feature is now implemented in 
**beta** in HTTrack/WinHTTrack ; feel free to test it and 
report problem/bugs, as many code was rewritten (which can 
cause some troubles..)

Download the beta release at:
<http://www.httrack.com/page3.php>

Summary of changes:
3.20-beta
+ New: HTTPS support (SSL)
+ New: ipv6 support
+ New: 'longdesc' added
+ New: new file 'new.txt' generated for transfer status 
reports
+ New: ISO9660 compatibility option
+ New: empty mirror/update detection improved
+ Fixed: The engine should be now fully reentrant
+ Fixed: Fixes for alpha and other 64-bit systems
+ Fixed: ftp problems with 2xx responses
+ Fixed: ftp problems with multiple lines responses
+ Fixed: ftp %20 not escaped anymore
+ Fixed: ftp RETR with quotes problems
+ Fixed: now tolerent to empty header responses
+ Fixed: hts-log closed
+ Fixed: Compressed pages during updates
+ Fixed: Crash when receiving empty compressed pages
+ Fixed: Random crashes in 'spider' mode
+ Fixed: bcopy/bzero not used anymore..
+ Fixed: various code cleanups