If you are looking for a free screen recorder no watermark, no time limit with professional features, built-in video editor: ActivePresenter is the first choice. 2nd choice is OBS Studio. Last choice is Apowersoft free online screen recorder. Choosing which screen recorder depend on your needs. See this article: elearningsupporter.com/2017/08/22/top-5-best-free-screen-recorders-without-watermark