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.
Afterburner is co-developed by MSI and Rivatuner, similarly to EVGA Precision. It is compatible with most Nvidia and ATI cards.
Overclocking capabilities include control over voltage (enabled in settings), and core, shader, and memory clock speeds. Up to 5 profiles can be saved at a time. More Info »
Included in the package is Kombustor, which is a stress-testing utility based off of Furmark.
The On-Screen-Display Server runs in the background and activates whenever it detects a DirectX or OpenGL application, although it sometimes detects false-positives (which can be manually excluded). The On-Screen-Display Server can display GPU temperature, usage, fan speed, fan tachometer, core clock, shader clock, memory clock, memory usage, and frame-rate, depending on your settings.
The video capture has no watermark or time limit like the Fraps trial, and you can choose either uncompressed, RTV1, or MJPG compression for your video format. You can also adjust quality, frame size, and FPS.
The screen capture can be configured to use bmp, png, or jpg as its format. The quality can be adjusted from 25-100%.
Overall, this is one of a gamer's or video editor's best friends, as you can overclock your GPU(s), stress-test your GPU(s), take screenshots, and record videos all in one application.