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 threads, synchronization objects, IP sockets and named pipes. PTypes also offers message queues as an alternative method of thread synchronization. Its main `target audience' is developers of complex network daemons, robots or non-visual client/server applications of any kind.
PTypes defines simple and intuitive interfaces, and unlike the STL, it is almost free of C++ templates. PTypes is portable across many modern operating systems (currently FreeBSD, Linux, SunOS, Mac OS X and Windows). All platform-dependent issues are hidden inside. A simple web server called wshare is included in the package to demonstrate the full power of the library.
And finally, PTypes is open and free.