Kai is a code profiler for the Pharo Smalltalk programming language. Screenshots and examples are available on http://www.moosetechnology.org/tools/Spy/Kai
The first prototype of Kai is the result of a join effort between Alexandre Bergel, Romain Robbes, and Walter Binder
Currently, two students are extending Kai. Their roadmaps for their work is summarized in the link below
Other profilers: