MyQoS Free Version is a bandwidth management solution based on FreeBSD 4.X. It provides all the necessary features for a small ISP to do QoS. It is limited to 2Mb/s unless you upgrade to the Standard Version. It is distributed as an appliance image. This image can be burnt to CD for testing before installation.
Sequreisp is an ISP management software. It has a nice and powerful Web interface, and it can handle up to 3000 or more clients in a single server, thus it is oriented to small/medium ISPs and WISPs. It features load balancing, failover, prioritization, bandwidth control, P2P detection, Web cache, backup in a single file, VLAN support, and much more.