octo

collectd is a small daemon which collects system information periodically and writes the results to an RRD-file. What does collectd do? collectd collects information about the system it is running on and writes this information into special database files. These database files can then be used ... [More] to generate graphs of the collected data. collectd itself does not generate graphs, it only collects the data. You should use software like drraw to generate pretty pictures from these RRD-files. Nonetheless, sample scripts are included to get you started on own graphing scripts. [Less]

liboping is a C library to generate ICMP echo requests, better known as "ping packets". It is intended for use in network monitoring applications or applications that would otherwise need to fork ping(1) frequently. Included is a sample application, called oping, which demostrates the library's ... [More] abilities. It is like ping, ping6, and fping rolled into one. liboping was inspired by ping, libping and fping: It differs from these existing solutions in that it can `ping' multiple hosts in parallel using IPv4 or IPv6 transparently. Other design principles were an object oriented interface, simplicity and extensibility. [Less]