OpenWhistle
OpenWhistle: A free open-source hotline platform with strong case controls and self-hosted deployment. Ranked #16 of 27 in Whistleblower Hotline Software by our editors (7.3/10); pricing: Free plan; best for free self-hosted teams needing deadline tracking.
At a glance
- Editor score7.3 / 10
- PricingFree plan
- Best forFree self-hosted teams needing deadline tracking
- Free planYes
- Paid fromFree
- Anonymous reportingYes
- Facts checked20 Sep 2026
Where it wins
- Anonymous reporting with two-way whistleblower messaging
- HinSchG deadline tracking, case workflow, and audit logging
- Open-source deployment with OIDC, webhooks, and multi-tenancy
Where it doesn't
- Requires Linux and organization-managed self-hosting
- No built-in telephone intake channel
- No AI features or paid support tier
Our verdict on OpenWhistle
OpenWhistle is a free, open-source whistleblower reporting platform for organizations that need an internal digital reporting channel. It supports anonymous and confidential submissions, two-way communication between administrators and whistleblowers, configurable categories and locations, case assignment, statuses, notes, audit logging, and evidence-file attachments. The platform is designed around German HinSchG and EU whistleblower-directive requirements, making it a fit for teams that want reporting and case administration under their own infrastructure.
Pricing is straightforward: OpenWhistle is free under GPL-3.0 and has no paid plans. The published feature set includes deadline tracking for HinSchG acknowledgement and feedback requirements, email and webhook notifications for new reports, configurable evidence storage and deletion controls, and multi-tenant organization support. SMTP email, webhooks, and OIDC cover core notification, integration, and authentication needs, while administrator authentication can use TOTP or optional OIDC. This combination suits organizations that can manage infrastructure and want control over deployment and data handling rather than a hosted subscription.
Deployment is the main trade-off. OpenWhistle runs on Linux and is self-hosted with Docker, so the organization remains responsible for installation, operations, storage, access management, and ongoing maintenance. The system provides a digital reporting workflow with no IP logging, but its telephone-channel material is a guide for operating an oral channel alongside the platform rather than a built-in phone hotline. Choose OpenWhistle if free licensing, deadline tracking, auditability, anonymous communication, and infrastructure control are priorities. Organizations seeking vendor-managed hosting, built-in telephone intake, or AI-assisted workflows should consider an alternative.
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OpenWhistle pricing
OpenWhistle fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Anonymous reporting | Yes |
| Intake channels | Not verified |
| Phone hotline | Not verified |
| Workflow automation | Yes |
| Custom intake forms | Not verified |
| Single sign-on | Yes |
| Employee coverage | Not verified |
| Deployment | Self-hosted |
| Platforms | Web, Linux |
| Compliance & security | GDPR, 2FA |
| Support | Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 3 integrations: SMTP email, Webhooks, OIDC |
| Pricing | Free plan |
| Website | openwhistle.net |
| Facts checked | 20 Sep 2026 |
OpenWhistle integrations
OpenWhistle lists 3 integrations on its own site.
- SMTP email
- Webhooks
- OIDC
Alternatives to OpenWhistle
- Diligent Speak Up ManagerA broad speak-up system combining AI intake, anonymous reporting and investigation management.8.9
- SpeakUp ReportA mature, multi-channel hotline and case management platform for complex programs.8.8
- Whispli CoreA multichannel reporting platform with mobile apps, automation, and enterprise controls.8.7
See all OpenWhistle alternatives →
Also Ranked In
OpenWhistle is ranked in 2 of our directories.
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OpenWhistle is listed in our Whistleblower Hotline Software directory. Add the badge to your site — it links back to this page.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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