CallDiff 2026 — Diffs for Function Call Stacks Across Git Commits
CallDiff is an open-source, tree-sitter-based CLI that shows how function call stacks change between two git commits, “like git diff, but for who-calls-whom.” It compares call graphs across 22 languages (TypeScript, Python, Go, Rust, Java, C/C++, and more) so you can see which callees appeared, disappeared, or moved — instead of wading through buried line diffs. Built for AI-agent code review, it ships diff, tree, and reach commands plus machine-readable JSON output. ...