Offen Fair Web Analytics vs Plausible Analytics

Compare Offen Fair Web Analytics and Plausible Analytics on capabilities, jurisdiction, assurance, and fit for European buyers.

Both listed as alternatives to: Fathom Analytics, Google Analytics, Matomo

Offen Fair Web Analytics

Germany· Web Analytics

Needs review

Shortlist when you want self-hosted, Apache-2.0 analytics that only measures after opt-in, encrypts events in the browser, and lets visitors open their own data in the Auditorium. Skip when you need cookieless full-coverage metrics, session replay/heatmaps, or zero-ops managed EU hosting—consider Plausible, Pirsch, or Friendly Analytics instead.

Opt-in onlyBrowser E2E encryptionSelf-hostedApache-2.0Visitor data accessBerlin-based project

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Plausible Analytics

Estonia· Web Analytics

Needs review

Shortlist when you need cookieless website analytics with EU-owned visitor hosting, a lightweight script, AGPL transparency, and either managed Cloud or self-hosted CE. Skip when you need heatmaps/session replay, multi-day user-level product analytics, HIPAA/BAA, free forever hosted analytics, or zero non-EU SaaS anywhere in vendor ops—consider Matomo-class (e.g. Friendly Analytics / Piwik PRO), Pirsch, or Simple Analytics depending on depth vs simplicity.

Cookieless by designEU-owned visitor hostsAGPLv3 open sourceSelf-host CEDPA automaticLightweight script

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Highlighted rows differ between the two products.

Offen Fair Web Analytics vs Plausible Analytics: Snapshot
Feature	Offen Fair Web Analytics	Plausible Analytics
Country of origin	Germany	Estonia
Category	Web Analytics	Web Analytics
Open source	Yes	Yes
Self-hosted	Yes	Yes
Headquarters	Germany	Estonia
Legal entity	Public legal notice lists Frederik Ring, Berlin (offen.software); product authors Frederik Ring and Hendrik Niefeld—no separate GmbH name verified on imprint	Plausible Insights OÜ, Västriku tn 2, 50403 Tartu, Estonia
Governing law	Germany (indicative from Berlin imprint)	Estonian / EU law context for the OÜ; confirm contract terms for governing law clauses
US parent / control	No known US parent	No known US parent
CLOUD Act exposure (indicative)	Low	Medium
Hosting / residency	Product is operator self-hosted (your VPS/cloud/on-prem). No Offen multi-tenant analytics SaaS or vendor subprocessor list for visitor events. Related marketing site (offen.software) names Hetzner Online GmbH (Germany) as host—not the analytics data path. Optional community deploys include Heroku (operator choice).	Visitor analytics: Hetzner (Falkenstein, Germany), UpCloud (Finland, DB/exports), Bunny (Slovenia, CDN/DNS/DDoS)—European-owned; vendor states visitor data never leaves the EU. Customer-account subprocessors include Paddle (payments), Postmark (email), Gravatar, optional Google (GA import), Help Scout, Nolt; site tools may include hCaptcha, Algolia, Mailchimp. SCCs claimed for non-EU processors.
Summary	Open-source, self-hosted web analytics with opt-in consent, browser-side end-to-end encryption, and a shared Auditorium so visitors can see and control their own usage data.	Estonian open-source, cookieless web analytics (AGPLv3): lightweight script, EU-owned hosting on Hetzner/UpCloud/Bunny, managed Cloud plus self-hosted Community Edition.
Tags	analytics open-source privacy self-hosted gdpr opt-in e2e-encryption	analytics open-source privacy self-hosted gdpr web-analytics cookieless saas estonia google-analytics-alternative

At a glance: Offen Fair Web Analytics vs Plausible Analytics
At a glance	Offen Fair Web Analytics	Plausible Analytics
HQ / authors	Berlin, Germany (Frederik Ring & Hendrik Niefeld)	Not listed
License	Apache-2.0 (code/docs); logo CC-BY-NC-ND-4.0	AGPLv3; Cloud + Community Edition
Delivery	Self-host only (binary, Docker, community deploys)	Not listed
Consent model	Opt-in only; first-party cookies	Not listed
Default retention	6 months (configurable shorter)	Not listed
Funding note	NLnet NGI support (project-stated)	Not listed
HQ	Not listed	Tartu, Estonia
Legal entity	Not listed	Plausible Insights OÜ (reg. 14709274)
Visitor hosts	Not listed	Hetzner DE; UpCloud FI; Bunny SI
Commercial model	Not listed	Pageview-based Cloud SaaS; free CE self-host
Tracking model	Not listed	Cookieless; daily rotating hash; no PII stored

Key capabilities: Offen Fair Web Analytics vs Plausible Analytics
Key capabilities	Offen Fair Web Analytics	Plausible Analytics
Opt-in only	Yes	Not listed
Browser E2E encryption	Yes	Not listed
Self-hosted	Yes	Not listed
Apache-2.0	Yes	Not listed
Visitor data access	Yes	Not listed
Berlin-based project	Yes	Not listed
Cookieless by design	Not listed	Yes
EU-owned visitor hosts	Not listed	Yes
AGPLv3 open source	Not listed	Yes
Self-host CE	Not listed	Yes
DPA automatic	Not listed	Yes
Lightweight script	Not listed	Yes

Offen Fair Web Analytics

Opt-in only collection with first-party cookies
No analytics events are recorded until the visitor actively consents. Cookies are first-party and the tracker is meant to run on a same-site subdomain so third-party cookie restrictions and cross-site tracking models do not apply. Visitors who never opt in leave no usage trail—expect lower absolute volumes than cookieless tools that measure by default.
Browser-side end-to-end encryption of usage events
Clients encrypt usage data before it leaves the browser; the server stores ciphertext and cannot decrypt events alone. Only the visitor (via their cookie) and the matching operator account can open that visitor's data in the Auditorium. Practical impact: a compromised database or overly broad ops access does not yield plaintext browsing histories the way a typical self-hosted analytics DB would.
Auditorium for both operators and visitors
Operators see aggregates across pages where the installation is active (unique users/sessions, top pages, filters). Each opted-in visitor can open the same style of UI for their own data only, with plain-language metric explanations, and can delete data or fully opt out later. This is the fair design point: measurement is not a one-way glass.
Essential metrics without IP or User-Agent capture
Dashboards cover real-time activity, page views, unique users and sessions, bounce rate, returning users, top pages, referrers, UTM campaign/source, landing and exit pages, weekly retention, and load time. Location is country-level from timezone mapping; mobile share uses orientation capability—not IP geolocation or UA parsing. No heatmaps, session replay, or warehouse-grade product analytics.
Lightweight self-host: binary, Docker, SQLite or SQL
Production installs use a single binary (Linux/Windows/macOS) or the offen/offen image; docs also cover Heroku, Uberspace, and YunoHost. Default store is SQLite; MySQL and Postgres are supported. AutoTLS can request Let's Encrypt certificates. Config is environment variables or offen.env. You own uptime, backups, SMTP for password reset, and the subdomain layout.
Multi-site accounts, teams, and short retention
One installation can cover multiple websites with shared team access. Default retention is six months with automatic deletion; operators can shorten retention (e.g. 12 weeks, 30 days, 7 days) knowing shorter values purge older events on startup. Consent banner appearance is customizable; UI locales include EN, DE, FR, ES, PT, and VI.

Plausible Analytics

Cookieless measurement with daily rotating visitor hash
No cookies, localStorage, or persistent IDs. Uniques use hash(daily_salt + domain + IP + UA); salt rotates every 24 hours and raw IP/UA are never stored—so analytics can often run without a consent banner, at the cost of no multi-day user stitching.
Lightweight script and single-page traffic dashboard
Vendor claims a script ~54× smaller than Google Analytics with real-time updates (~30s), sources, pages, devices, UTM channels, scroll-depth goals, and optional Google Search Console import—built for marketers who refuse GA4 report complexity.
Goals, custom events, funnels, and revenue on Cloud
Codeless page goals, file downloads, outbound clicks, custom events/properties, AI-referral traffic views, and (on higher Cloud plans) funnels, user journeys, and ecommerce revenue attribution—not session replay or in-app product analytics.
EU-owned visitor hosting (Hetzner, UpCloud, Bunny)
Cloud visitor data is processed on European-owned infrastructure: Hetzner (Germany), UpCloud (Finland), Bunny CDN (Slovenia). Plausible states visitor data never leaves the EU and is not stored on US hyperscalers.
AGPLv3 open source with Community Edition self-host
Full codebase on GitHub; free CE for self-host (long-term releases ~twice yearly). Cloud-only features include advanced bot filtering, funnels/journeys, ecommerce revenue, SSO, and Sites API—self-host ops, backups, and upgrades are yours.
Automatic DPA, Stats API, exports, and enterprise SSO
Public DPA applies to Cloud customers by use; CSV export and Stats API for BI; Business/Enterprise add higher API limits, raw event exports, managed proxy, and SAML SSO (Google Workspace, Okta, Microsoft Entra ID per docs).

Assurance & compliance: Offen Fair Web Analytics vs Plausible Analytics
Assurance & compliance	Offen Fair Web Analytics	Plausible Analytics
Independent security / architecture audit	Not found No public third-party audit PDF found; coordinated disclosure via SECURITY.md email only.	Not found Open-source code and security overview published; no public independent pen-test or no-logs audit PDF found on compliance/security pages.
ISO 27001	Not found No public ISO 27001 certification claim found on official site or docs.	Not found No ISO 27001 claim located on security or compliance hub pages reviewed.
SOC 2 / SOC 3	Not found No public SOC 2/3 report found.	Not found No SOC 2/3 claim located on security or compliance hub pages reviewed.
GDPR / EU data protection	Vendor claimed EU authors; opt-in, data minimization (no IP/UA), visitor access/erasure, short default retention, Datensparsamkeit framing. Self-host means operator remains controller—confirm your legal basis and notice.	Vendor claimed EU entity; cookieless non-PII design; public data policy, DPA, and vendor-published legal assessment on GDPR/ePrivacy positioning.
US CLOUD Act exposure (indicative)	Partial EuropeanStack assessment: no known US parent; product not delivered as US-hosted vendor SaaS. Operator-chosen infrastructure (including optional Heroku/US cloud) can still create CLOUD Act paths for stored ciphertext/metadata. Not legal advice.	Partial Estonian OÜ, no known US parent; visitor data on EU-owned Hetzner/UpCloud/Bunny. Partial/medium because customer-account subprocessors include US-oriented SaaS (e.g. Postmark, Help Scout, Gravatar, optional Google). Indicative only—not legal advice.
Data processing agreement (B2B)	Not applicable No multi-tenant vendor analytics processing relationship documented; operator self-hosts and is typically controller. Custom development/support via offen.software is separate from a standard SaaS DPA.	Vendor claimed Public DPA applies automatically to Cloud customers by use of the service; lists processor duties and 48-hour breach notification target.
EU AI Act	Not applicable Web analytics metrics product; not an AI system product.	Not applicable Website analytics product; not marketed as an AI system under the AI Act.

Considerations & known limitations: Offen Fair Web Analytics vs Plausible Analytics
Considerations & known limitations	Offen Fair Web Analytics	Plausible Analytics
Opt-in undercounts absolute traffic	High Visitors who never consent generate no events. Growth and content KPIs will not match cookieless tools or GA-style default measurement—treat as design, not a misconfiguration.	Not listed
You own uptime, backups, and secrets	Medium No managed Offen cloud. Operators must run HTTPS/subdomain layout, set OFFEN_SECRET for stable sessions, configure SMTP for resets, and back up SQLite/SQL—plus avoid reverse proxies that log IPs if minimization is a goal.	Not listed
E2E crypto is vendor-claimed architecture	Medium Browser-side encryption and server inability to decrypt are core claims from project docs/README, not independently audited in public materials found. Security-sensitive orgs should review source or commission assessment.	Not listed
Hosting choice reintroduces cloud jurisdiction	Medium Self-host on US-group cloud or Heroku means CLOUD Act/subprocessor analysis shifts to your host even though Offen itself is Berlin-based OSS without a vendor SaaS region map.	Not listed
No public ISO/SOC or audit pack	Low Procurement checklists that require vendor ISO 27001/SOC 2 will stall; evidence is open source and design docs, not cert registry entries.	Not listed
Essential metrics only	Medium No heatmaps, session replay, advanced funnels, or product-analytics warehouse features. Wrong tool if the shortlist criterion is UX research depth rather than fair traffic statistics.	Not listed
US-linked customer-account subprocessors	Not listed	Medium Visitor metrics stay on EU-owned hosts, but billing, email, support, and optional integrations use providers such as Postmark, Paddle, Help Scout, Gravatar, and Google—material for zero-US-processor policies.
No public ISO 27001 / SOC 2	Not listed	Medium Compliance hub emphasizes product design and EU hosting rather than ISO/SOC certificates; orgs with mandatory cert checklists must request evidence or accept open-source + DPA packaging.
Self-host CE feature and release lag	Not listed	Low CE is free but long-term releases (~twice yearly) and omits Cloud-only funnels, journeys, ecommerce revenue, SSO, and advanced bot filtering—ops burden sits with you.
No multi-day user identity or replay	Not listed	Low Daily hash resets prevent cross-day visitor stitching by design; heatmaps/session replay are out of scope—teams needing those must add other tools.
Misconfiguration can reintroduce personal data	Not listed	Medium Passing emails, patient IDs, or other identifiers in URLs or custom properties undermines the non-PII model; vendor also states no HIPAA/BAA.

Fit

Offen Fair Web Analytics

Best fit when

Public-sector, media, NGO, or mission-driven sites that need visitor-visible transparency and strict opt-in
EU teams that must keep analytics off third-party trackers and can run a small always-on instance
Operators who want first-party subdomain cookies, CSP-aware embedding, and no IP/User-Agent collection
Organisations evaluating fair-processing design over maximum measurement coverage
Teams comfortable with SQLite or SQL self-host ops (binary or Docker) and publishing their own privacy notice

Poor fit when

Product or growth teams that require near-complete traffic measurement without consent friction
Needs for heatmaps, session replay, funnels, or ad-ecosystem attribution comparable to Hotjar/Mixpanel/GA
Buyers seeking a vendor-managed multi-tenant analytics cloud with SLAs and a signed vendor DPA as processor
Large enterprises that require public ISO 27001/SOC 2 or third-party security audit packs before shortlist

Consider instead when

When: You want privacy-oriented analytics with managed EU hosting and lower consent friction
Consider: Plausible Analytics or Pirsch Analytics
Typically optimised for simpler cookieless or low-friction models and hosted plans; less radical visitor Auditorium design than Offen.
When: You need EU hosted privacy analytics with operator support and less self-host burden
Consider: Friendly Analytics
European catalog peer oriented to hosted privacy analytics; compare consent model and feature depth to Offen’s opt-in + E2E approach.
When: You need deep product analytics, funnels, or session UX tooling rather than fair traffic metrics
Consider: Hotjar, Mixpanel, or a full GA4 stack (with legal review)
Different category: richer product/UX analytics, different jurisdiction and subprocessor profile.

Plausible Analytics

Best fit when

Teams replacing GA4 who want aggregate marketing metrics without cookies or user profiles
EU orgs that require visitor analytics on European-owned infrastructure (Hetzner/UpCloud/Bunny)
Sites that prioritize script weight, Core Web Vitals, and a one-page dashboard
Buyers who want AGPL auditability and optional Community Edition self-host exit
Agencies and multi-site operators needing shared links, team seats, and pageview-tiered Cloud plans
Procurement paths that value a public DPA, data policy, and subprocessor list over ISO/SOC certificates

Poor fit when

Product analytics needs: multi-day user identity, cohorts, retention, feature experiments
UX research that requires heatmaps, session replay, or rage-click recording
Healthcare or other programs that require HIPAA and a BAA (explicitly not offered)
Buyers who need free forever hosted analytics with no subscription
Orgs that forbid any US-linked SaaS in vendor account tooling (Postmark, Help Scout, etc. are listed)

Consider instead when

When: You need Matomo-depth features (heatmaps, session recording, heavy on-prem packaging)
Consider: Friendly Analytics, Piwik PRO, or self-hosted Matomo
Trade Plausible’s minimalism for plugin breadth and different operators.
When: You want a lean EU privacy analytics peer with a different stack or license posture
Consider: Pirsch Analytics or Simple Analytics
Compare hosting ownership, funnels/ecommerce gates, and self-host options side by side.
When: You only need edge-level basic counts and already run Cloudflare
Consider: Cloudflare Web Analytics
Simpler install path; US company and thinner marketing analytics surface.
When: You need free hosted analytics and accept Google’s data practices
Consider: Google Analytics
Different legal and commercial model—not an EU privacy substitute.

Open questions for due diligence

Offen Fair Web Analytics

Will your traffic and KPI model tolerate opt-in-only measurement after a pilot on a non-critical property?
Where will you host the instance (EU on-prem/VPS vs US-group cloud), and who holds OFFEN_SECRET and DB backups?
Do procurement rules require third-party audits or ISO/SOC that Offen does not publish?
Do you need a signed vendor DPA as processor, or is controller-only self-host acceptable to counsel?
Is subdomain + CSP (script-src/frame-src + unsafe-inline styles for the banner) feasible on your main site?

Plausible Analytics

Which exact customer personal data categories does each account subprocessor (Postmark, Paddle, Help Scout, etc.) receive in production?
Can Enterprise contracts exclude optional integrations (Google, Help Scout) or pin subprocessor lists for regulated buyers?
Are independent pen-test reports or ISO/SOC roadmaps available under NDA?
What are contracted RPO/RTO and backup locations beyond the high-level Hetzner/UpCloud description?
For CE self-host: which Cloud-only features remain permanently out of CE versus merely delayed on the long-term release train?