There haven't been much news on Boost.Process lately which doesn't mean though that nothing is happening. I've been working on a Boost.Asio extension which can be used to wait asynchronously for Windows processes - see https://github.com/BorisSchaeling/asio. This was already supported by Boost.Process 0.4 but the implementation was heavily criticized. The code has been moved now to Boost.Asio (or at least I hope it will - I'm in contact with Chris :) and provides a new Windows I/O object called object_handle. The implementation is now based on the Windows function RegisterWaitForSingleObject(). The new I/O object can not only be used to wait for processes. It can also be used to wait for events, mutexes, semaphores etc. As it's not process-related anymore, it makes sense to ship the code with Boost.Asio (where we have already similar Windows I/O objects called random_access_handle and stream_handle - object_handle fits in nicely). Once I'm done with this, a major critical point should have been resolved. I'll go back then to Boost.Process code and help Jeff to finish https://github.com/JeffFlinn/boost-process. I'm not sure how far we are there. But as I don't remember any major obstacles, I'm confident that there are none. :) Boris