[Centos] question about Webtraffic monitoring

Fri Dec 17 10:16:39 UTC 2004
Michiel van Es <michiele at info.nl>

Does anyone know a good open source and free webmonitoring software 
which I can use to monitor some websites and build simple 
uptime/downtine statistics for my customers (conform SLA's) ?

Any help/hitns would be very apperciated :)