Investigation Software,
Built by Investigators.

We build the software we wished we'd had when we were younger. Self-hosted, AI-assisted, and defensible end-to-end.

Our products

Two purpose-built tools for serious investigations.

Each tool is a complete product on its own. They're also built to work together.

Elementa

Case management

End-to-end case management with evidence scoring, AI-assisted document review, and defensible Records of Work.

Learn about Elementa

PSTmortem

Email evidence triage

Parse, search, and triage Microsoft Outlook PST files. Smart search catches typos and name variations, with AI-assisted tagging and clean evidence exports.

Learn about PSTmortem

Why Nexum

Designed around the way investigations actually work.

AI you supervise, not the other way around.

Our AI does the legwork — flagging patterns, surfacing contradictions, drafting summaries. Investigators verify every finding and own every conclusion.

Two tools that work together — or alone.

Elementa handles case management. PSTmortem handles email evidence. Use either on its own, or use both for a complete investigations stack.

Defensible by design.

Records of Work, evidence scoring, and audit trails that stand up in any review.

Your data stays yours.

Self-hosted on your infrastructure, behind your firewall. Air-gapped deployments supported.

Who we serve

Built for the teams who can't afford to get it wrong.

Universities
Corporations
Investigations firms

See Elementa or PSTmortem in action.

Request a live walkthrough with the team.

Request a demo