LibTorrent is a BitTorrent library written in C++ for *nix, with a focus on high performance and good code. The library differentiates itself from other implementations by transfering directly from file pages to the network stack. On high-bandwidth connections it is able to seed at 3 times the speed ...
Nagios is a powerful host and service monitoring program designed to run on most *NIX systems. It is written in C and designed to be fast and flexible. It has the ability to contact administrators via email, pager, or other user-defined methods.
nslookup - *nix simple nslookup clone for the Win32 platform (Console Application)
/// Does A DNS lookup by Host Name or IP. Host Name lookups can return
/// multiple IP Ranges.
