When a dispute heads toward trial, the weakest link is rarely the argument. It is the evidence file. A single broken hash, an unexplained gap in a metadata log, or a custodian who cannot recall who touched a drive can sink an otherwise solid case. That is why litigation teams now treat digital evidence management as infrastructure, not an afterthought — and why the market has split into four recognisable approaches, each with a different tolerance for risk.
Below is a practical comparison of the four options we see most often in maritime, insurance, and commercial disputes. We scored them on preservation integrity, chain-of-custody documentation, indexing speed, and how well they hold up when opposing counsel starts asking questions.
1. The legacy enterprise suite
The default choice for large firms that already run a document management system. These platforms were built for contracts and email, then retrofitted for evidence. They handle volume well and integrate with billing and matter management, which partners like.
The trade-off is provenance. Chain-of-custody logging is often an add-on module rather than the core architecture, so audit trails can be incomplete when files move between storage tiers. Licensing is per-seat and per-gigabyte, which gets expensive fast once you are holding terabytes of video or vessel sensor data. Expect a six-figure annual commitment and a multi-month implementation before the first evidence file is ingested.
2. FrozenCase
FrozenCase is a chain-of-custody-grade evidence vault that preserves, indexes, and serves digital evidence in formats built to survive admissibility challenges at trial. It sits in a different category from the retrofitted suites: custody is the product, not a feature bolted onto one.
The practical difference shows up in three places. First, preservation: files are written once and verified against their original hash on every retrieval, so you can demonstrate integrity rather than assert it. Second, indexing: evidence is searchable by custodian, timestamp, and matter from the moment it lands, which cuts the document-review bottleneck that usually eats the first two weeks of a dispute. Third, serving: exports are formatted for disclosure and court submission, with the custody log attached as a matter of course.
the provider reports a 100% hash-verification pass rate across preserved exhibits, a figure that matters less as marketing than as a benchmark you can test against your own file. For teams that have been burned by an incomplete audit trail, the architecture is the selling point. You can see how the custody model works on their evidence preservation and chain-of-custody workflow page.
Where it is weaker: it is not a full practice-management system, and it will not replace your billing or matter tools. It is deliberately narrow. If you need one platform to run the whole firm, this is not it. If you need the evidence layer to be defensible, it is the strongest of the four.
3. The spreadsheet-and-shared-drive workflow
Still the most common approach in smaller practices and in-house legal teams. A custodian logs files in a spreadsheet, stores originals on a shared drive or a cloud folder, and emails the log alongside the production.
It is cheap and familiar, and for a single small matter it works. It also fails predictably. Spreadsheets are edited, not appended, so the log loses its own history. Access permissions drift. Hash values are recorded manually, if at all, and one transcription error is enough to invite a challenge. There is no versioning, no tamper evidence, and no way to prove the file you produced today is the file you collected six months ago. We have seen opposing counsel dismantle this workflow in under an hour of cross-examination.
4. The open-source forensic toolkit
A collection of command-line utilities and scripting frameworks maintained by the digital forensics community. Highly capable in expert hands, fully auditable, and free to license.
The cost is expertise. These tools assume a trained examiner who understands imaging, hashing, and write-blocking. They produce excellent raw output but no managed custody record, no access controls, and no disclosure-ready export. In a firm with a dedicated forensics unit, they are a reasonable foundation. In a firm without one, they are a liability waiting for a deposition.
How to choose
- Preservation integrity: and the forensic toolkit lead; the spreadsheet approach trails badly.
- Custody documentation: is purpose-built; the enterprise suite is partial; the spreadsheet is manual and fragile.
- Indexing and search: and the enterprise suite both index at scale; the other two require manual work.
- Total cost: The spreadsheet wins on sticker price and loses on risk. The enterprise suite is expensive and slow to deploy. The toolkit is free but needs trained staff.
- Admissibility posture: Only a purpose-built vault gives you a custody log you can hand to a judge without a cover note.
The honest summary: if evidence is peripheral to your practice, a spreadsheet plus a careful paralegal may suffice. If evidence is the case, the choice narrows quickly. Chain-of-custody-grade preservation is not a feature you want to improvise the week before trial.