Call-Graph-Viewer 
A simple tool for profiling processes using callgraph data.
It already provides:
- A flat view of your most expensive functions
- A complete calltree, including costs / callcount at each node
- regex powered searching of both the call tree and the flat view
- Code annotation
- Callgrind integration:
- Easily profile C / C++ and similar languages
- (Unlike some viewers), The full call tree (using --separate-callers with callgrind)
- Simple CSV based input allows manual profile data to be used (e.g see the TCL pluging provided)
- Configure your own commands in the rc file