sysv_ipc 0.6 is now available. This is the first version to include Python 3 support. sysv_ipc is a BSD-licensed module which gives Python access to System V inter-process semaphores, shared memory and message queues on most (all?) *nix flavors, and possibly Windows + Cygwin. http://semanchuk.com/philip/sysv_ipc/ Enjoy Philip