replayproxy vs fatt: 2026 Comparison
replayproxy is a free digital forensics and incident response tool. fatt is a free digital forensics and incident response tool. Compare features, ratings, integrations, and community reviews side by side to find the best digital forensics and incident response fit for your security stack.
CST VerdictBased on our analysis of available product data, here is our conclusion:
Forensic analysts and incident responders who need to reconstruct attacker behavior from network captures will find replayproxy invaluable for its ability to replay HTTP sessions directly from pcap files without manual extraction. The tool's lightweight design and zero-cost entry point make it practical for resource-constrained SOCs running ad-hoc investigations. Skip this if you need production-grade proxying or support for encrypted protocols; replayproxy solves a narrow forensic use case, not general proxy infrastructure.
Incident response teams who need to pivot quickly from packet captures to threat hunting will find fatt indispensable; it extracts JA3 and HASSH fingerprints that let you correlate C2 signatures across your full traffic history in minutes instead of hours. Free and 679 GitHub stars means it's already baked into most mature IR playbooks, lowering your team's time-to-triage on network-based indicators. Skip this if you're looking for packet analysis beyond metadata extraction or need a GUI; fatt is CLI-only and does one job well, which is exactly why it works.
