CoreCtrl is described as 'Free and Open Source GNU/Linux application that allows you to control with ease your computer hardware using application profiles' and is a system information utility in the system & hardware category. There are more than 10 alternatives to CoreCtrl for Windows, Linux, Steam and Mono. The best CoreCtrl alternative is Open Hardware Monitor, which is both free and Open Source. Other great apps like CoreCtrl are MSI Afterburner, SpeedFan, GreenWithEnvy and AMD Software: Adrenalin Edition.
The Open Hardware Monitor is a free open source software that monitors temperature sensors, fan speeds, voltages, load and clock speeds of a computer.
Comprehensive tool offering GPU overclocking, video and screen capture, and overlays, with support for Nvidia and ATI cards. Features Kombustor stress test, portable use, ad-free experience, manual exclusion of false positives in displays, and multiple video compression options.
SpeedFan is a program that monitors voltages, fan speeds and temperatures in computers and controls the fans if possible.
GWE is a GTK system utility designed to provide information, control the fans and overclock your NVIDIA video card and graphics processor.
Designed to provide you with a clean, modern and easy-to-use interface where you can quickly access the latest software features, game stats, performance reports, driver updates, and much more - all from one convenient location.
GST is a GTK system utility designed to stress and monitor various hardware components like CPU and RAM.
RadeonTuner is an easy to use alternative for the AMD Adrenalin Software for users that just want the basics or use the driver only install type.
EVGA Precision X1 allows you to fine tune your EVGA graphics card for the maximum performance possible, with Core/Shader/Memory clock tuning, real time monitoring support including in-game and compatibility with almost all EVGA graphics cards.
ASUS GPU Tweak III is currently open beta testing so try it out, if you feel it is missing something crucial give ASUS your feedback & they may be able to add it while still in beta. So far ASUS has been very accommodating with all useful feedback..
Application to read current clocks of ATi Radeon cards (xf86-video-ati, xf86-video-amdgpu) - marazmista/radeon-profile
EXPERTool™ tuning utility for customized performance enhancements and efficient desktop management.
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OHM is used to monitor temps, clock speed, voltages, etc. CoreCTRL to adjust its parameters.