ATI Tray Tools is a Full Featured Radeon Tweaker that can be found in the windows tray which then allows instant access to options and settings.

Software highlights
Support for ATI Control Center
Support for TV Out and displays with profiles
Options to change Theater mode together with TV Out
Overclocking with templates including FAN Control
Automatic Overclocking when application required 3D mode
Temperature monitoring
Artifact Tester with ability to find maximum stable clocks for GPU and Memory.
Game profiles with desktop shortcut creation.
Direct3D settings with templates, GUI form and tray popup menu
OpenGL settings with templates, GUI form and tray popup menu
Hardware low level color correction
Hardware tweaks. Setting PCI latency timer
Radeon Information Show information about memory type, active rendering pipe lines and more
System wide Hot Keys. (Load profiles any profiles/work with colors/run any application)
Refresh Lock system with ability to set separate refresh rates for each resolution.
Tweak for overriding Pixel and Vertex Shaders
Speed improvement tweaks for Anisotropic/Trilinear Filtering. Support for Catalyst A.I.
Support for system options, VPU Recover, DMA Copy and so on
Support Display Rotation.
Support for MMC applications
Support for HYDRAVISION applications
Monitoring Graphs. (GPU/Env temperature. GPU/Mem speed, Main CPU Usage).
Unique OnScreen Display module with ability to show information about speed and temperature. Support Plugins API.
A lot of useful things. Like Save/Restore Desktop icon positions and more
Audio Recorder
Screenshots system
Powerful Plug-Ins support. (API for VC++/Delphi included)
PCI Register Set. Allow to program any registers in any PCI device at start up time. For advanced users only!
Source code for plugins as examples.
Shared memory allow other application to retrieve information about clocks, temperatures and general 3D settings.

You can download ATI Tray Tools Plugins collection from here