AISI DFIR vs libevt: 2026 Comparison
AISI DFIR is a commercial digital forensics and incident response tool by AISI. libevt 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 NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
Mid-market and enterprise security teams that need to move fast on active incidents will find AISI DFIR's managed service model cuts through the hiring shortage for in-house forensics expertise. The Scout and Hunter tools automate evidence collection and persistence removal directly on affected systems, compressing response timelines that would otherwise stretch weeks. The caveat: this is a managed service first, so your team trades hands-on control for speed and specialist depth, making it less suitable for organizations that need full visibility and control over every forensic decision.
Forensic investigators and incident response teams building custom parsing pipelines will extract value from libevt because it handles legacy Windows EVT files that commercial tools often skip. The library's 60 GitHub stars and active maintenance signal it's relied upon by practitioners who need programmatic access to pre-Vista event logs rather than waiting for vendor support. Skip this if your team needs a GUI tool or expects built-in correlation and alerting; libevt is a foundation for developers, not an end-user platform.
