GLXOSD is described as 'on-screen display (OSD)/overlay for OpenGL applications running on Linux with X11. It can show FPS, the temperature of your CPU, and if you have an NVIDIA graphics card (with proprietary drivers), it will also show the temperature of the GPU'. There are four alternatives to GLXOSD for Windows, Android, iPhone and Steam. The best alternative is MSI Afterburner, which is free. Other great apps like GLXOSD are RivaTuner (Free), OCAT (Free) and Gecata (Paid).
A powerful overclocking tool for your graphics card, which also includes screen capture and video capture tools, plus overlays. Has a lower FPS hit than Fraps, and offers the same functionality. The beta versions include audio streams alongside the video capture.
Open Capture and Analytics Tool. If you want to know how well a game is performing on your machine in real-time with low overhead. It supports all major APIs on Windows – Direct3D® 11, 12 and Vulkan® – and can show an in-game overlay.
Haven't you thought about saving the most exciting moments of your Minecraft, Diablo III, or Grand Theft Auto gaming? With Gecata by Movavi, you can record a full-screen gameplay at 60 fps and save it as MP4 video with recommended configurations for YouTube upload.