CLUE#ZO vs OpenWhistle

Side-by-side facts for CLUE#ZO and OpenWhistle, sourced from vendor-published materials. Both platforms market themselves for EU Directive 2019/1937 compliance.

At a glance

CLUE#ZO

German digital whistleblowing system from CAS Concepts and Solutions AG, delivered on SAP Business Technology Platform with integration to SAP S/4HANA and chatbot-guided report intake.

Headquarters: Hamburg, Germany
Pricing: Basic EUR 99/month (12 reports/year, 3 users); Standard EUR 299/month (50 reports/year, 6 users); Enterprise EUR 1,499/month (unlimited reports, 15 users). Prices are ex-VAT.
EU data hosting: EU (named data centre)
EU member states referenced: 1 of 27
Certifications: None published
AI on report content: Processes report content with AI / translation

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OpenWhistle

Portuguese whistleblowing channel with flat per-organisation pricing and unlimited users, published from EUR 17.60/month on annual billing.

Headquarters: Porto, Portugal
Pricing: Single plan: EUR 22/month, or EUR 17.60/month billed annually (EUR 211.20/year, described as 20% saving). VAT added on top. Price is per organisation with unlimited users.
EU data hosting: EU (named data centre)
EU member states referenced: 1 of 27
Certifications: None published
AI on report content: No AI processing of report content

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Full facts, side by side

Full facts, side by side: CLUE#ZO and OpenWhistle
Attribute	CLUE#ZO	OpenWhistle
Headquarters	Hamburg, Germany	Porto, Portugal
Ownership	Private, CAS Concepts and Solutions AG (Hamburg, Commercial Register HRB 69127)	Private, brand of Canelinfinita, Unipessoal Lda (Portugal, NIPC 518494128)
Pricing	Basic EUR 99/month (12 reports/year, 3 users); Standard EUR 299/month (50 reports/year, 6 users); Enterprise EUR 1,499/month (unlimited reports, 15 users). Prices are ex-VAT.	Single plan: EUR 22/month, or EUR 17.60/month billed annually (EUR 211.20/year, described as 20% saving). VAT added on top. Price is per organisation with unlimited users.
Pricing model	Tiered (per employee)	Flat published rate
Procurement model	Mixed	Demo required
Free trial	No	No
EU data hosting	EU (named data centre) European data centres (vendor states ISO 27001 certified data centres); built on SAP Business Technology Platform	EU (named data centre) Vendor states data is stored within the European Union; specific country and provider not named. Privacy policy notes data may be transferred to cloud providers outside the EEA under GDPR safeguards.
EU member states referenced	1 of 27	1 of 27
EU reporting languages	Undisclosed	Partial
Total reporting languages	Undisclosed	90
AI on report content	Processes report content with AI / translation	No AI processing of report content
Certifications	None published	None published
National laws referenced	EU Directive 2019/1937 Germany (Hinweisgeberschutzgesetz, HinSchG)	EU Directive 2019/1937 Portugal (Lei 93/2021)
Anonymous reporting	✓	✓
Case management	✓	✓
Multi-channel intake	—	—
Public API	—	—
GDPR (vendor claim)	✓	✓
EU Directive 2019/1937 (vendor claim)	✓	✓
Last verified	19 July 2026	19 July 2026

How CLUE#ZO and OpenWhistle differ

Both CLUE#ZO and OpenWhistle can host whistleblower report data inside the EU. CLUE#ZO references 1 of the 27 EU member states and OpenWhistle references 1. Neither lists an ISO 27001 certification. Both route buyers through a demo or sales process rather than self-serve sign-up. CLUE#ZO processes report content with AI, while OpenWhistle does not. Both market themselves for EU Directive 2019/1937 compliance, so the better fit depends on your priorities around data residency, certification, pricing transparency, and use of AI.

CLUE#ZO vs OpenWhistle: common questions

Does CLUE#ZO or OpenWhistle host whistleblower data in the EU?

Both CLUE#ZO and OpenWhistle can host whistleblower report data inside the EU.

How many EU member states do CLUE#ZO and OpenWhistle cover?

CLUE#ZO references 1 of the 27 EU member states and OpenWhistle references 1.

Is CLUE#ZO or OpenWhistle ISO 27001 certified?

Neither lists an ISO 27001 certification.

How do CLUE#ZO and OpenWhistle pricing and sign-up compare?

CLUE#ZO is priced at Basic EUR 99/month (12 reports/year, 3 users); Standard EUR 299/month (50 reports/year, 6 users); Enterprise EUR 1,499/month (unlimited reports, 15 users). Prices are ex-VAT.. OpenWhistle is priced at Single plan: EUR 22/month, or EUR 17.60/month billed annually (EUR 211.20/year, described as 20% saving). VAT added on top. Price is per organisation with unlimited users.. Both route buyers through a demo or sales process rather than self-serve sign-up.

Do CLUE#ZO or OpenWhistle use AI on whistleblower reports?

CLUE#ZO processes report content with AI, while OpenWhistle does not.

Another option in this directory

CLUE#ZO and OpenWhistle are two of the platforms indexed here. If your shortlist is still open, one more worth comparing — with a different set of tradeoffs:

EthicsPortal

Whistleblower reporting portal hosted on Hetzner in Germany. Flat €60/month plan.

Headquarters: Poland
Pricing: €60/month, or €41.67/month billed annually (€500/year)
EU data hosting: EU (named data centre)
EU member states referenced: All 27
Certifications: ISO 27001
AI on report content: No AI processing of report content

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Compare this tool against other platforms in the directory.

See all alternatives to CLUE#ZO → See all alternatives to OpenWhistle → Compare all platforms