GPUTool is described as 'Used to alter clock speed on NVIDIA graphics cards' and is an app in the System & Hardware category. There are more than 10 alternatives to GPUTool for Windows, Linux, Android, iPhone and Mac. The best alternative is MSI Afterburner, which is free. Other great apps like GPUTool are RivaTuner (Free), CoreCtrl (Free, Open Source), AgaueEye (Free) and ASUS GPU Tweak (Free).
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.
CoreCtrl is a Free and Open Source GNU/Linux application that allows you to control with ease your computer hardware using application profiles. It aims to be flexible, comfortable and accessible to regular users.
AgaueEye is a hardware monitor with in-game overlay tools(FPS) for Windows, with AgaueEye, you can monitor your hardware, like CPU/GPU/MB/HDD/RAM states, and display overlay when you playing games, AgaueEye also record the states for post analysis.
ASUS GPU Tweak fully implements TechPowerUp’s GPU-Z analysis and monitoring features. Sliders and hotkeys let the user adjust core and memory clocks, core voltage and fan speed. Drivers and vBIOS can be automatically live updated.
This program 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, Logitech Keyboard LCD Display support, and compatibility with almost all EVGA graphics cards.
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.