
ftrace
DTrace
strace
perf
Process Monitor
ltrace
ktrace
SystemTap
CodeFlower
Gource
GitHub Visualizer
Codeology
PhpMetrics
SonarQube
ProjectCodeMeter
Semgrep
ftrace
CodeFlowerDTrace - DTrace is a performance analysis and troubleshooting tool for Solaris, Mac OS X and FreeBSD.
Gource - Gource is a software version control visualization tool.
strace - Trace system calls and signals. A diagnostic, debugging and instructional userspace utility.
GitHub Visualizer - Enter user/repo and see the project visually
perf - Perf is a simple app monitoring solution paired with meaningful alerts.
Codeology - Open-source algorithm that visualizes GitHub projects