strace - Trace system calls and signals. A diagnostic, debugging and instructional userspace utility.
Codex - Codex is a VS Code extension that allows any engineer to attach comments, questions or any kind of content to specific lines of code.
perf - Perf is a simple app monitoring solution paired with meaningful alerts.
Figstack - Your intelligent coding companion
DTrace - DTrace is a performance analysis and troubleshooting tool for Solaris, Mac OS X and FreeBSD.
What The Diff - Your AI-powered code review assistant