Based on our record, MangoHUD seems to be more popular. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Configuration of MangoHud is explained in the README at the MangoHud git repo. It will tell you what to put in your ~/.config/MangoHud/MangoHud.conf. You can have it set up as described within like 90 seconds. If you don't already have MangoHud installed, just install it using the AUR helper of your choice (or if you have the Pamac GUI installed, you can use that). You just need mangohud-x11, lib32-mangohud-x11,... Source: almost 2 years ago
You would have to write a merge request yourself to add the functionality. If that's above your skill level, maybe file a feature request at https://github.com/flightlessmango/mangohud. Source: almost 3 years ago
NZXT CAM - CAM is a piece of software that was designed by NZXT, one of the industry leaders in the world of gaming PC production.
MSI Afterburner - Tool to manage video cards. Shows video card stats (temp, GPU usage, etc.).
ASUS GPU Tweak - ASUS GPU Tweak fully implements TechPowerUp’s GPU-Z analysis and monitoring features.
Frameview app - Frameview app is software that is designed to measure the frame rates, frame times, power, and performance per watt on a wide range of graphics cards.
Guru3D - Guru of 3D: PC Hardware Reviews and tests
Open Hardware Monitor - Monitors temperature sensors, fan speeds, voltages, load and clock speeds, with optional graph.