There[he]#039[/he]s a growing demand for embedded operating systems, and it[he]#039[/he]s best when the one you build upon is open source. The RT-Thread project[he]#039[/he]s R[he]amp[/he]D team has spent three years of research and intensive development to arrive at the project[he]#039[/he]s latest offering: RT-Thread Smart.

Source: LXer – A new open source operating system for embedded systems