Compare Seline alternatives for privacy-first analytics
If you are evaluating Seline alternatives, this guide compares Flowsery first and ten other tools using official product pages, docs, and pricing. It keeps Seline's strengths visible while showing where each alternative is a better fit.
Last verified:April 30, 2026
Short answer
The best Seline alternatives depend on whether you need simple web analytics, open-source deployment, mobile product analytics, revenue attribution, or enterprise autocapture. Flowsery is listed first because this is a Flowsery buyer guide, but each product is described with official facts and practical tradeoffs.
Context
Seline remains a credible option for lightweight EU-hosted analytics with revenue events. Use this page to compare where Flowsery and the other tools differ on privacy model, pricing, hosting, revenue features, APIs, and product depth.
Flowsery is a cookieless web analytics product for traffic, funnels, privacy-safe visitor journeys, goals, campaigns, and revenue attribution without storing IP addresses, fingerprinting visitors, or collecting personal data.
Best for
Teams that want simple web analytics, funnel analysis, and revenue reporting in one privacy-first dashboard.
Pricing
Free plan up to 5,000 events per month; paid plans start at $19.99/month.
Privacy
No cookies, no personal data, no stored IPs, and no fingerprinting by default.
Verified facts
Flowsery publishes a sub-10KB tracking script and positions the product around cookieless analytics.
The product includes goals, funnel analysis, privacy-safe visitor journey tracking, UTM campaign reporting, and revenue attribution.
Flowsery lists GDPR, CCPA, and PECR compliance for its default privacy-first tracking model.
Watch for
Flowsery is a hosted product, so it is not the right fit if self-hosting is mandatory.
Very broad product analytics suites can offer deeper experimentation or replay workflows than Flowsery focuses on.
Plausible is an open-source web analytics product with hosted cloud and self-hosted Community Edition options, a lightweight script, goals, funnels, custom events, and ecommerce revenue tracking.
Best for
Teams that want a simple one-page analytics dashboard with an open-source and self-hostable option.
Pricing
30-day free trial; hosted Starter starts at $9/month for up to 10,000 monthly pageviews.
Privacy
Cookie-free, no persistent identifiers, no cross-site tracking, and EU-only data processing according to Plausible.
Verified facts
Plausible publishes its script as 2.5KB gzipped.
Plausible includes goals and custom events on Starter; Business adds custom properties, Stats API access, ecommerce revenue attribution, and funnels.
Plausible Community Edition is available for self-hosting under the AGPL license.
Watch for
Some capabilities, including the Stats API, depend on plan level.
Teams that want built-in revenue-first journeys may still prefer a product centered on attribution.
Fathom is a hosted privacy-first analytics product with no analytics cookies, a small script, simple dashboards, custom events, ecommerce event values, API access, and long data retention.
Best for
Businesses that want a very simple hosted replacement for heavier analytics tools.
Pricing
30-day free trial; paid plans start at $15/month for up to 100,000 pageviews.
Privacy
No cookies; EU visitor IPs are routed to EU servers and anonymized before anonymous analytics data is processed for reporting.
Verified facts
Fathom says its script is just 2KB in source code.
Fathom includes custom events, ecommerce event value tracking, and API access.
Fathom is hosted only; its official FAQ says local hosting is not available.
Watch for
Fathom does not publish a permanent free plan on its pricing page.
Public official pages checked did not show a funnel analysis feature comparable to dedicated funnel tools.
Simple Analytics is a privacy-focused hosted analytics product with no cookies, no personal data, no fingerprinting, lightweight scripts, events, goals, and API access.
Best for
Sites that want a deliberately simple privacy-first dashboard and an ongoing free plan.
Pricing
Free forever plan; 14-day free trial; paid Simple plan starts at EUR 15/month.
Privacy
No cookies, no personal data, no fingerprinting, with data hosted in the Netherlands/EU.
Verified facts
Simple Analytics publishes latest.js at about 3.7KB gzip and light.js at about 1.9KB gzip.
It supports events, automated events, Goals, Stats API, Export API, and Admin API.
Dedicated revenue tracking was not found in the official pages checked; payment conversions can be tracked as events.
Watch for
It is hosted SaaS; self-hosting was not found in official docs checked.
Revenue attribution is less central than in products built specifically around revenue analytics.
#5
Pirsch
Cookie-free analytics with German hosting and low entry price
Pirsch is a privacy-friendly analytics product with cookie-free tracking, custom events, conversion goals, funnels on Plus, revenue tracking on Plus, REST APIs, and Enterprise on-premise options.
Best for
Teams that want privacy-first analytics with German hosting, server-side options, and a low starting price.
Pricing
30-day free trial; starts at $6/month for 10,000 monthly pageviews.
Privacy
Cookie-free by design; visitor hashes vary by site and date, and IPs are not stored or logged according to Pirsch docs.
Verified facts
Pirsch supports custom events, conversion goals, REST API access, and SDKs.
Funnels and ecommerce revenue tracking are listed as Plus features.
Standard and Plus are cloud hosted in Germany; Enterprise can be on-premise/self-hosted.
Watch for
An official script-size number was not found in the pages checked.
Some advanced analytics capabilities are plan gated.
#6
Umami
Open-source analytics with free cloud and self-hosting
Umami is an open-source analytics product with managed cloud and self-hosting, a small script, custom events, goals, funnels, API access, and revenue reporting.
Best for
Teams that want open-source analytics, a free cloud tier, or free self-hosting.
Pricing
Hobby cloud plan is free; paid Pro starts at $20/month with a 14-day trial.
Privacy
No cookies, no fingerprinting, no personal data, and no cross-site tracking according to Umami docs.
Verified facts
Umami publishes its script as under 2KB.
Umami supports custom events with properties, goals, funnels, revenue reports, and API access, with Hobby API access marked as limited on pricing.
Umami is open source and self-hostable, with Umami Cloud as the managed version.
Watch for
Self-hosting means your team owns updates, scaling, and operations.
Some advanced managed-cloud needs may depend on paid plan limits.
#7
Swetrix
Open-source analytics with extra experimentation tools
Swetrix is an open-source privacy-first analytics product with cloud hosting, self-hosting, cookie-free anonymous collection, goals, funnels, APIs, revenue tracking, A/B tests, feature flags, CAPTCHA, error tracking, and performance analytics.
Best for
Teams that want privacy-first analytics plus a self-hosted option and extra product experiments in one tool.
Pricing
14-day free trial; no free cloud plan; paid cloud starts at $19/month for 100,000 events/month on yearly billing; Community Edition can be self-hosted free.
Privacy
Cookieless anonymous collection with GDPR, CCPA, and PECR compliance claims.
Verified facts
Swetrix publishes its tracking script as under 5KB.
Swetrix supports goals, funnels, Statistics API, Events API, and revenue tracking through Stripe, Paddle, or backend API.
Swetrix is open source and self-hostable with Docker.
Watch for
Cloud pricing does not show a permanent free plan in the official pricing checked.
The broader feature set can be more than teams need if they only want basic traffic analytics.
#8
Visitors
Revenue-first analytics with realtime visitor journeys
Visitors is a revenue-first hosted analytics product with cookie-free default tracking, realtime visitor feed, performance insights, Core Web Vitals, custom events, funnels, revenue attribution, visitor profiles, and APIs.
Best for
Teams that want revenue attribution, visitor journeys, and realtime website analytics at a low entry price.
Pricing
14-day free trial with unlimited usage before choosing a plan; starts at $9/month for 10,000 monthly events.
Privacy
Default tracking is cookie-free and anonymous, with Global Privacy Control and Do Not Track support; persist, identify, or PII events require consent for EU users.
Verified facts
Visitors publishes its tracking script as under 1KB.
Visitors supports custom events, data attributes, funnel analysis, Account API, and Project API.
Revenue attribution supports Stripe, Dodo Payments, and RevenueCat, but attribution requires persist mode and EU consent.
Watch for
Self-hosting or open-source deployment was not found in official sources checked.
Some revenue attribution modes require explicit consent for EU users.
#9
DataFast
Revenue-first analytics with tiny script and payment integrations
DataFast is a revenue-first analytics product with a tiny script, custom goals, conversion funnels, payment-provider integrations, Payment API, cookieless mode, and a self-hostable Docker Compose claim.
Best for
Founders and small SaaS teams that want fast revenue attribution with payment-provider integrations.
Pricing
Free plan includes 5,000 events/month; Starter is $9/month for 10,000 events/month; Growth is $19/month for 100,000 events/month.
Privacy
DataFast homepage says "0 cookies," while its GDPR docs distinguish the default script, which uses cookies for visitor identification, from the cookieless script, which avoids visitor-ID cookies with lower attribution accuracy.
Verified facts
DataFast publishes its script as 517 bytes and under 1KB gzipped.
DataFast supports custom goals, conversion funnels, API endpoints, and payment integrations for providers such as Stripe and LemonSqueezy.
DataFast says it is self-hostable with Docker Compose on its homepage.
Watch for
The default script is cookie-based unless teams choose the cookieless script.
Open-source status was not found in the official accessible pages checked; self-hosting is described as Docker Compose on DataFast homepage.
#10
Matomo
Mature open-source analytics with cloud and on-premise
Matomo is a long-running analytics platform with Cloud and open-source On-Premise options, strong data ownership positioning, goals, events, ecommerce tracking, APIs, and funnels on Cloud or via a paid On-Premise plugin.
Best for
Organizations that need self-hosting, broad analytics coverage, and full control over analytics data.
Pricing
On-Premise is EUR 0; Cloud Business starts at EUR 29/month excluding tax with a free trial.
Privacy
Privacy-first and 100% data ownership positioning; cookie and consent requirements depend on configuration and jurisdiction.
Verified facts
Matomo offers Cloud SaaS and open-source On-Premise deployment.
Matomo includes goals, event tracking, ecommerce tracking, HTTP Tracking API, and HTTP Analytics API.
Funnels are included on Cloud and available as a paid plugin for On-Premise.
Watch for
Matomo is more feature-rich and can require more setup than simpler analytics tools.
An official tracking script-size number was not found in the sources checked.
#11
PostHog
Open-source product analytics suite for product teams
PostHog is a broad product analytics and product engineering suite with analytics, funnels, paths, retention, session replay, feature flags, experiments, surveys, error tracking, APIs, SQL, and self-hosting.
Best for
Product and engineering teams that want analytics plus replay, flags, experiments, surveys, and data tooling.
Pricing
Free cloud tier includes 1M analytics events/month; paid usage is pay-as-you-go after free allowances.
Privacy
Offers controls such as cookieless tracking, user anonymization, reverse proxying, and opt-out by default in the JS SDK.
Verified facts
PostHog Cloud includes product analytics, replay, feature flags, experiments, surveys, error tracking, and more.
PostHog can be self-hosted for free with Docker Compose under MIT licensing, while many paid-plan features are cloud-only.
PostHog supports funnels, trends, paths, retention, SQL, API access, custom events, identify, and groups.
Watch for
It is broader and more complex than a focused web analytics product.
PostHog includes revenue and data-stack workflows, but teams should expect a broader product analytics setup rather than a focused website revenue attribution dashboard.
Questions to ask before switching
Resources used
These pages link to official product, pricing, documentation, and privacy resources used to keep the comparison factual.
Start with cookieless traffic, funnels, privacy-safe visitor journeys, campaign reporting, and revenue attribution before committing to a heavier analytics stack.