What Sets Them Apart
PostHog and Plausible occupy different positions in the analytics landscape despite both positioning as privacy-first alternatives to Google Analytics. PostHog aims to replace an entire stack of product tools by combining analytics, session recordings, feature flags, experiments, and surveys into a single platform. Plausible focuses exclusively on web traffic analytics with the simplest possible implementation and the smallest possible footprint.
PostHog and Plausible at a Glance
PostHog deploys as a self-hosted instance or through their cloud service. Setup involves adding a JavaScript snippet and configuring which events to track, with autocapture available for quick starts. Plausible adds a single script tag under one kilobyte to your site with no configuration needed. Traffic data starts flowing immediately with zero cookies, no consent banners required, and full GDPR compliance out of the box.
PostHog's feature depth is its primary advantage. Product analytics tracks user journeys with funnels, retention charts, and path analysis. Session replay shows exactly what users do on screen. Feature flags control rollouts with percentage-based targeting. A/B testing measures the impact of changes with statistical significance. Surveys collect qualitative feedback directly from users within the product interface.
Plausible delivers clean traffic analytics with a single-page dashboard showing visitors, page views, bounce rate, visit duration, and referral sources. Goal tracking measures conversions for specific actions. The UTM campaign tracking monitors marketing effectiveness. Custom event tracking covers basic product interactions. Everything loads instantly in a dashboard that requires no training to understand and no cookies to operate.
Scalability and Event Processing
PostHog handles massive event volumes with its ClickHouse backend, processing millions of events per second in production deployments. Self-hosted instances scale horizontally for enterprise workloads. The trade-off is infrastructure complexity and resource requirements for self-hosting. Plausible is extremely lightweight by design, with the tracking script adding negligible page weight and the self-hosted instance running comfortably on minimal server resources.
PostHog integrates with data warehouses, Slack, Zapier, and dozens of third-party tools through its API and webhook system. SDKs cover JavaScript, Python, Ruby, Go, PHP, React Native, Flutter, and iOS. Plausible focuses on simplicity with a clean API for data export, Google Search Console integration, and basic webhook support. Plausible's integration surface is intentionally limited to maintain the tool's simplicity.
PostHog's cloud tier is free up to one million events monthly across all features including session replay, feature flags, and experiments. Beyond that, pricing is usage-based starting at fractions of a cent per event. Plausible's cloud pricing starts at nine dollars monthly for up to ten thousand page views, scaling to sixty-nine dollars for one million views. Self-hosting is free for both tools, though PostHog requires significantly more infrastructure.
Community and Open-Source Ecosystem
PostHog has a large open-source community with strong GitHub activity, comprehensive documentation, and an active Slack community. The team publishes detailed engineering blog posts and maintains transparent product development. Plausible's community is smaller but passionate about privacy-first analytics, with clear documentation, an active GitHub repository, and a growing user base of developers and site owners who reject surveillance-based analytics.
Choose PostHog when you need a unified product analytics platform that replaces multiple tools, want session replay and feature flags alongside web analytics, or need deep user behavior analysis for product decisions. Choose Plausible when you want simple, clean traffic analytics without cookies or consent banners, prioritize minimal page weight, or need analytics that fully comply with privacy regulations out of the box.
The Bottom Line
Plausible wins for website owners and content teams who need fast, privacy-compliant traffic analytics without complexity. PostHog wins for product teams building software who need unified analytics, experimentation, and user behavior tools in one platform. The two tools can coexist since Plausible handles public-facing traffic analytics while PostHog provides deep product insights behind authentication.