Open Hardware Monitor - Monitors temperature sensors, fan speeds, voltages, load and clock speeds, with optional graph.
SimpleScreenRecorder - SimpleScreenRecorder is a Linux screen recorder that supports X11 and OpenGL.
Guru3D - Guru of 3D: PC Hardware Reviews and tests
Camtasia - Camtasia 2018 makes it easy to record your screen and create polished, professional-looking videos.
Geforce Experience - GeForce Experience is a new application from NVIDIA that optimizes your PC in two key ways.
OBS Studio - Free and open source software for video recording and live streaming for Mac, Windows and Linux.