PTypes (C++ Portable Types Library) is a simple alternative to the STL that includes multithreading and networking. It defines dynamic strings, variants, character sets, lists and other basic data types along with portable thread and synchronization objects, IP sockets and named pipes. Its main `target audience is developers of complex network daemons, robots or non-visual client/server applications of any kind.-PTypes (C++ Portable Types Library) is a simple alternative to the STL that includes multithreading and networking. It defines dynamic strings, variants, character sets, lists and other basic data types along with portable thread and synchronization objects, IP sockets and named pipes. Its main `target audience　is developers of complex network daemons, robots or non-visual client/server applications of any kind.