Rybbit: Open-Source Analytics with Funnels and Session Replay

Rybbit is an open-source web analytics platform built as a direct alternative to Google Analytics — cookieless, privacy-first, and self-hostable. It launched publicly in April 2025 and has gained traction quickly, primarily because it includes two features that lightweight alternatives like Plausible and Umami do not bundle at the same price point: session replay and funnel analysis. For SaaS teams evaluating their marketing site analytics stack in 2026, Rybbit sits in an interesting position between the simplest privacy-first tools and the heavier product analytics platforms.

Where Rybbit sits in the analytics landscape

The web analytics market in 2026 has two clear camps. The first is marketing site analytics: tools that track pageviews, traffic sources, referrers, and conversion events on public-facing pages. Plausible, Fathom, Umami, and Simple Analytics are the main players. These tools are lightweight, easy to install, privacy-compliant, and focused on answering the question "where is my traffic coming from and what is it doing?"

The second camp is product analytics: tools that track in-app user behaviour after login — feature adoption, retention cohorts, activation funnels, A/B experiments. PostHog, Mixpanel, and Amplitude are the main players. These tools are more complex to instrument, require a defined event schema, and answer the question "what are users doing inside my product and are they getting value?"

Rybbit is firmly in the first camp — it is a web analytics tool, not a product analytics platform. But it extends the marketing site analytics category by adding session replay and funnel analysis, which most tools in its category either omit or gate behind a premium tier. The distinction between web and product analytics matters for understanding what Rybbit is and is not designed to do.

What Rybbit offers that Plausible and Umami do not

Session replay is the feature that most clearly differentiates Rybbit from its peers. Plausible does not offer session replay at any pricing tier. Umami does not include session replay. Fathom does not include session replay. If you want to watch how visitors navigate your marketing site, identify confusing UI elements, and understand where users drop off before clicking a signup button, Rybbit is currently the only lightweight, open-source, privacy-first web analytics tool that includes session replay in the same platform.

Funnel analysis is the second differentiator. Plausible includes funnel analysis on its Business plan at $19/month. Umami does not include funnel analysis in its default feature set. Rybbit's Standard plan at $13/month includes funnels. For a SaaS team that wants to track the funnel from landing page to signup to first feature use on the marketing site layer, Rybbit provides this without requiring the higher Plausible tier. Real-time visitor tracking is also included — a feature Plausible has but that is missing or limited in Umami.

Session replay in a lightweight analytics tool: what to expect

Session replay in Rybbit covers the marketing site use case: recording how anonymous visitors navigate public pages before they sign up or take a conversion action. This is valuable for two specific problems. The first is landing page optimisation: understanding where users scroll, what they read, and where they leave before clicking a call to action. The second is conversion debugging: identifying friction points in signup flows, form submissions, or checkout pages that are causing drop-off that funnel data alone cannot explain.

What Rybbit's session replay is not designed for is in-app product analytics. For watching logged-in users navigate your SaaS product after activation — understanding which features they adopt, where they get confused, and what they do before churning — you need a product analytics tool with session replay, not a web analytics tool. PostHog handles this use case well: its session replay is explicitly designed for logged-in user sessions, tied to user identity, and integrated with its funnel and retention analyses. Rybbit's session replay is designed for anonymous visitor sessions on public pages.

Funnel analysis on the marketing site layer

Funnel analysis in Rybbit works on the web analytics model: you define a sequence of page visits or custom events and measure the percentage of visitors who complete each step. A typical SaaS marketing funnel in Rybbit might be: homepage visit → pricing page → signup form → signup completion. Each step shows the number of visitors and the drop-off rate. Custom events let you track more granular actions like button clicks or form submissions as funnel steps, not just page views.

This is distinct from the product analytics funnel, which tracks in-app activation steps: signup → first login → first feature use → first value moment. The activation funnel guide covers the in-product funnel in detail. For SaaS teams, both funnels matter and they answer different questions. The marketing site funnel (in Rybbit, Plausible, or GA4) tells you how well your top-of-funnel acquisition is converting visitors to signups. The product funnel (in PostHog, Mixpanel, or Amplitude) tells you how well your product is converting signups to activated, retained users. A gap in either funnel has a different root cause and a different remedy.

Self-hosting vs Rybbit Cloud: the practical trade-off

Rybbit is open-source under AGPL-3, which means self-hosting is free for unlimited events and unlimited sites. The self-hosted deployment runs on Docker, which is straightforward for teams with basic DevOps experience. A self-hosted Rybbit instance on a $10–$20/month VPS gives you the full feature set — session replay, funnels, real-time tracking, custom events — with complete data sovereignty and no event-volume limits.

The trade-off is maintenance: software updates, backup management, SSL certificate renewal, and monitoring for uptime. For a technical founding team that is already managing server infrastructure, this is a minor addition. For a non-technical team or one where DevOps bandwidth is scarce, the $26/month Pro cloud plan is the lower-friction option. The self-hosting approach is especially relevant for SaaS teams with GDPR obligations around data residency — self-hosting in an EU data centre means your analytics data never leaves the jurisdiction, which is cleaner than relying on a vendor's data processing agreement. Self-hosted analytics and data sovereignty covers this trade-off in more detail across Plausible, Matomo, and OpenPanel.

Where Rybbit is not the right fit for SaaS teams

Rybbit is a new tool. It launched in April 2025, which means it has less than two years of production track record. The plugin ecosystem, community documentation, and integrations are still maturing. Teams that need reliable integrations with their CRM, ad platforms, or CDP from day one will find Plausible's more established ecosystem easier to work with. Rybbit's GitHub repository is active and the developer is iterating quickly, but early-stage tools carry more risk of breaking changes, missing edge cases, and unresolved bugs.

For compliance-heavy SaaS teams — those with enterprise customers, SOC 2 requirements, or strict data processing policies — the maturity gap matters more. Plausible has been independently audited, has detailed GDPR documentation, and has data processing agreements designed for enterprise requirements. Rybbit's compliance documentation is less developed. If your sales process requires a DPA, vendor security questionnaire responses, or audit trail documentation for analytics vendors, Plausible or Matomo are lower-friction choices.

How Rybbit compares to PostHog for SaaS teams

PostHog and Rybbit are not competing tools — they serve different layers of the SaaS analytics stack. PostHog is the right tool for tracking in-app user behaviour: activation events, feature adoption, retention cohorts, A/B experiments, and feature flags. Rybbit is the right tool for the marketing site layer: traffic sources, landing page performance, and pre-signup conversion funnels. A complete SaaS analytics stack uses both: a web analytics tool for the public site and a product analytics tool for the logged-in application.

Where Rybbit might replace PostHog is the session replay use case on the marketing site. PostHog can also be deployed on the marketing site and its session replay will capture anonymous visitor sessions there. But PostHog is a heavier platform to instrument for the public site — it is designed for the authenticated product context. Rybbit's lighter tracking script and simpler setup make it better optimised for the public marketing site use case. If you are already using PostHog for your product and want a dedicated marketing site tool, Rybbit is a reasonable complement. Accurate acquisition data without cookies covers the general case for why a dedicated marketing site analytics layer matters even when you have PostHog in the product. The short version is that the consent-banner data gap is real, and cookieless web analytics tools like Rybbit eliminate it entirely.