tcpsplit vs fatt: 2026 Comparison
tcpsplit 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:
Incident response teams handling large packet captures will appreciate tcpsplit for one reason: it slices PCAP files along TCP connection boundaries, eliminating the manual work of extracting individual sessions for analysis. The tool is free and lightweight enough to run on forensic workstations without dependencies, making it practical for analysts who need fast carving during triage. Skip this if you need GUI-driven packet analysis or threat intelligence enrichment; tcpsplit is a Unix utility for people comfortable with command-line workflows and existing in a broader toolchain.
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.
