OverWolf Is Same as "Xbox Game Bar" but it's WAYYYYYYY smoother! It's perfect for low-end-pc so "Xbox" works fine on high-end pcs and "OverWolf" works good on low-end pcs, don't ask me about mid-end pcs lol..
Xbox Game Bar - A customizable gaming overlay built into Windows 10 👾
SimpleScreenRecorder - SimpleScreenRecorder is a Linux screen recorder that supports X11 and OpenGL.
OBS Studio - Free and open source software for video recording and live streaming for Mac, Windows and Linux.
Camtasia - Camtasia 2018 makes it easy to record your screen and create polished, professional-looking videos.
Nvidia ShadowPlay - ShadowPlay
Steam Backlog - Steam Backlog is a library manager and games database, built with simplicity in mind. Search your Steam games by tags and features, sort by playtime, metascore, HLB and more.