FreeRTOS is a real-time operating system kernel for embedded devices. Usually, we would use it for tiny-time-constraint applications where reliability is at utmost importance, so why bother about RTOS at all?
Dynamic DNS is a handy tool whenever you want access your home environment from the outside world. Most of us have dynamic IP, so the dns server must be updated whenever the dynamic address changes. Somehow I don't feel comfortable with services such as no-ip.com etc. and that is why I decided to write simple, yet useful dynamic DNS service on my own. It took me ~300 lines of well formatted code. It is not much, isn't it? Let's "GO"!