Build system, that used for this set of projects. Tools that introduce higher abstraction layer under native system capabilities for multi-threading and IPC. Abstraction layer that make utilisatoin of C++ iostream interfaces to work with tcp sockets, as on server as on client side. Abstraction layer that propagate EDA (events-driven architecture) design directly into C++ programming. Compare STL implementations and related programming techniques. ``Exam'' is a new project. It should provide unit test tool for concurrent and asyncronous system. Here initial project documentation.