All the following NVIDIA® Parallel Nsight™ features are available free of charge:

Feature	Included
Integrated into Visual Studio 2008 SP1 or Visual Studio 2010 SP1
Native CUDA C/C++ GPU Debugging
PTX/SASS Assembly Debugging
Direct3D 10/11 Shader Debugging and Pixel History
Direct3D 10/11 Frame Debugging and Dynamic Shader Editing
Direct3D 10/11 Frame Profiling and Frame Timings
Direct3D 10/11, OpenGL, Cg, CUDA C/C++ and OpenCL API & HW Trace
Application and System Trace with Call Stack Correlation
Data breakpoints for CUDA C/C++ code
OpenCL Kernel Trace
Full Tesla Compute Cluster (TCC) Support
Forum Support
All Version Upgrades