Heritrix is also a powerful crawler as HTTrack. 

When I tried to run both in Linux (UBUNTU), I got the problem : to run
Heritrix, port 8080 is required; therefore, when at the time Heritrix is
running, if I let WebHTTrack run also, Heritrix will be crashed. 

Generally speaking, if WebHTTrack and another software make use of the same
port, one will be crashed and the system is stoped abnormally. Is there any
way to let WebHTTrack only use ports except 8080 ( WebHTTrack always uses port
8081 only for example)?
Looking for answers from WebHTTrack experts ! Feel free to contact me at MSN
carmen_loyal@hotmail.com or Yahoo : sunday_nhut@yahoo.com ! Thanks