Best of · Written by Yobel Tzegai · Last checked 9 October 2026

What is the best software for an AI system register under the EU AI Act?

On 9 October 2026, Holistic AI stated the most of the seven requirements below on its own pages, of 24 tools ranked; Complipath (complipath.io) is number 2 by the same count. The ranking counts what each site says, not what each product does.

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Seven requirements, ranked

Ranked by how many of these seven requirements each tool's own pages state: A register of AI systems; Systems you build and systems you buy; A named owner per system; Automatic discovery of AI in use; AI used by your suppliers; EU AI Act risk classification; Provider or deployer role. A full yes counts 1, partly counts a half and not stated counts 0. Each tool's cells are sentences from its own site, read on 9 October 2026; Complipath's are our own pages. This ranks what each site says, not what each product does: a row a site leaves unstated counts zero, and is a question to ask them, not a no.

AI register software, ranked on seven requirements, read on 9 October 2026
#ToolScore, of 7Price, in their wordsFree startHostingSide by side
1Holistic AI7Not published on the pages we read Not stated No, UK by default holisticai.comComplipath vs Holistic AI
2Complipath6€499 a month Prices exclude VAT. Yes YesAll side by side
3ComplyLayer6Pro $1,499/year or $149/month complylayer.com Yes complylayer.com Yes complylayer.comComplipath vs ComplyLayer
4Credo AI6Not published on the pages we read Yes credo.ai Not statedComplipath vs Credo AI
5Modulos6Not published on the pages we read Yes modulos.ai Yes modulos.aiComplipath vs Modulos
6OneTrust6Not published on the pages we read Not stated Not statedComplipath vs OneTrust
7Enzai5½Not published on the pages we read Not stated Not statedComplipath vs Enzai
8FairNow (Optro)5½ No optro.ai Not stated Not statedComplipath vs FairNow (Optro)
9Saidot5½Not published on the pages we read Yes saidot.ai Not statedComplipath vs Saidot
10Sprinto5½Not read: their pricing page refused our reader Not stated Not statedComplipath vs Sprinto
11Trustible5½Not published on the pages we read Not stated Not statedComplipath vs Trustible
12SetAIComply5From €39.00/mo. setaicomply.com Yes setaicomply.com Yes setaicomply.comComplipath vs SetAIComply
13Vanta5 No vanta.com Not stated Not statedComplipath vs Vanta
14Veritome4½Starter (€79) veritome.eu Yes veritome.eu Yes veritome.euComplipath vs Veritome
15Euridium4Starter €300–800 / month euridium.eu Yes euridium.eu Yes euridium.euComplipath vs Euridium
16CompliAct3½$1,950 CAD · one-time compliact.com Yes compliact.com Not statedComplipath vs CompliAct
17Securiti3½ No securiti.ai Not stated Not statedComplipath vs Securiti
18Dossentia3€6,000/yr dossentia.com Partly dossentia.com Yes dossentia.comComplipath vs Dossentia
19Monitaur3Not published on the pages we read Not stated Not statedComplipath vs Monitaur
20Legalithm2½€1,500 per product, per year legalithm.com Yes legalithm.com Yes legalithm.comComplipath vs Legalithm
21Scrut Automation2½ No scrut.io Not stated Not statedComplipath vs Scrut Automation
22Atheros AI2from €290 per month atherosai.com Yes atherosai.com Yes atherosai.comComplipath vs Atheros AI
23IBM watsonx.governance2Starting at $3,500 (monthly pricing) ibm.com Not stated Not statedComplipath vs IBM watsonx.governance
24Themio0from €49/month at launch themio.ai Yes themio.ai Coming soon themio.aiComplipath vs Themio
Starter

€499 a month

Prices exclude VAT.

  • Up to 20 AI systems
  • Every duty, deadline and article
  • Evidence and the audit log
  • Your first system is free, with no end date
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All plans

Questions

How is this list ranked?

By a count, not a judgement. For each requirement named above the table, a tool scores 1 where its own site states it, a half where it states part of it and 0 where the pages we read say nothing. Complipath is scored by the same rule from its own pages, so it is first only where the count puts it first.

Is this list neutral?

It is written by Complipath, so read it as ours. What keeps it checkable is that every cell for another tool is that tool's own sentence, linked to the page it stood on with the day it was read, and every Complipath cell is our own page. Open the side-by-side page for any tool to see all fifty rows.

What does Not stated mean?

That none of the pages of that tool's site we read said it. It is a statement about those pages and not about the product. It counts zero in the ranking. Ask the vendor before you rule anything out, and check the date on the table, because sites change.

Why is a price shown as a link?

A price is printed as the vendor's own words only while our reading of it is recent. When the reading grows old, the cell turns into a link to their pricing page instead of a quote, so this page never shows a figure the vendor may have changed since we read it.

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See what your customers will ask about your AI.No account needed. Every answer cites the article it rests on.