Analytics

PostHog34.4k★

PostHog gives you product analytics, session recordings, feature flags, A/B testing, and surveys in one platform. Self-host it or use their cloud. Basically, Mixpanel + Hotjar + LaunchDarkly combined, but open source. The free cloud tier is generous: 1 million events/month, 5K session recordings, unlimited feature flags. That covers most startups well past launch. Self-hosting is free with no feature restrictions (it's the same codebase). Docker Compose or Kubernetes. The catch with self-hosting: PostHog runs on ClickHouse for analytics, which needs real infrastructure. Minimum production setup is 8GB RAM, and it grows with your event volume. Cloud pricing scales with usage: events beyond 1M are ~$0.00031 each, recordings beyond 5K are ~$0.005 each. A mid-size app doing 5M events/month pays roughly $125/mo. That's significantly cheaper than Mixpanel or Amplitude at the same scale. Solo to small teams: free cloud tier. You'll hit 1M events/month faster than you think if you instrument everything, so be selective about what you track. Medium teams: cloud paid tier, math works out well. Large orgs: self-host for data sovereignty or use cloud enterprise. The catch: doing everything means nothing is best-in-class. The session recordings are solid but not Hotjar-level. The feature flags work but LaunchDarkly has deeper targeting. The analytics are good but not Amplitude-deep. PostHog wins on breadth and value, not depth in any single feature.

Plausible24.8k★

Plausible gives you a clean, lightweight analytics dashboard with no cookies, no cross-site tracking, and no personal data collection. The tracking script is under 1KB. Your visitors don't get a cookie banner. AGPL v3, Elixir/Phoenix. The dashboard is refreshingly simple: page views, unique visitors, bounce rate, referral sources, top pages, countries, devices. No 47-tab interface like GA4. You see what matters in one screen. Self-hosting is free. Docker Compose setup with ClickHouse for storage. The AGPL license means modifications must be open-sourced. Plausible Cloud starts at $9/mo for up to 10K monthly page views. Scales to $19/mo (100K), $29/mo (200K), and up. Annual billing gives ~33% discount. Solo: self-host for free if you're comfortable with Docker and ClickHouse. Cloud at $9/mo is worth it to skip the ops. Small teams: $9-19/mo is cheap for privacy-compliant analytics. Medium to large: self-host to avoid per-pageview pricing at scale. The catch: Plausible is intentionally limited. No user-level tracking, no funnels (basic goal tracking exists), no cohort analysis. If you need to answer "what did user X do before they churned," you need a different tool. And self-hosting ClickHouse isn't trivial: it's resource-hungry and needs monitoring.

dataease23.9k★

DataEase is a drag-and-drop BI platform that connects to 20+ data sources and turns them into dashboards without writing SQL. The community edition is free and fully self-hostable. The team at Fit2Cloud also built JumpServer and KubeSphere, so this is an established product, not a hobby project. Docker deployment is a one-liner and you are up in minutes. The backend is Java, so plan for 2 cores and 4GB+ RAM. Updates are smooth, but the plugin architecture means third-party plugins can fall behind main releases. The premium X-Pack layer adds SSO, data masking, and audit logging for teams that need compliance controls. Small teams can run this free indefinitely. If your analytics needs are internal reporting and dashboards, you probably never hit the paywall. The X-Pack tier becomes relevant at enterprise scale where auth and audit requirements kick in. Superset and Metabase cover similar ground but require more SQL comfort. The catch: documentation is primarily Chinese-language. Community support skews Asia-Pacific, so finding help in English takes more digging.

Matomo21.5k★

You self-host it, you own the data, your visitors' browsing habits stay on your servers. GDPR compliance without the headache of cookie consent banners (in most configurations). GPL v3, used by over a million websites including government agencies and universities. It tracks page views, sessions, referrers, goals, e-commerce conversions, basically everything Google Analytics does. Self-hosting is free with no feature limits. Their cloud-hosted version starts at $23/mo for 50K hits. On-premise premium plugins (like A/B testing, funnels, custom reports) cost $229/year per plugin or $629/year for the bundle. The catch: Matomo's self-hosted interface feels dated compared to modern analytics tools like Plausible or PostHog. It's powerful but overwhelming: hundreds of reports, dense UI, lots of configuration. And the PHP/MySQL stack means you need traditional web hosting, not just a static server. For teams that just want pageviews and referrers, Plausible or Umami are simpler.

jitsu4.8k★

Jitsu is an open-source event collection and data pipeline tool. It captures events from your web and mobile apps and streams them directly to your data warehouse or analytics tools. Segment-style routing, warehouse-first design. MIT-licensed. Self-hosted via Docker. Simpler to operate than RudderStack for teams with fewer destination needs. The warehouse connector is the strong suit: Snowflake, BigQuery, ClickHouse, Redshift. SDK support covers JavaScript, Python, and mobile. Teams that want to capture web events and land them cleanly in a warehouse without paying Segment's per-MTU pricing get immediate value here. Less useful if you need 200+ marketing-tool destinations. The catch: Jitsu is leaner than RudderStack or Segment, which means fewer pre-built connectors. If your use case is warehouse-only, that is fine. If you need Salesforce, HubSpot, or ad platform integrations, the connector library gets thin fast.

rudder-server4.4k★

RudderStack is a Customer Data Platform that collects events from your web, mobile, and server sources and routes them to 200+ destinations: data warehouses, analytics tools, CRMs, and advertising platforms. The open-source alternative to Segment. Apache-licensed, free to self-host. Setup requires Docker Compose and a Postgres database. The data plane handles event ingestion at scale. You manage infrastructure; RudderStack handles routing logic. A control plane UI is available separately for destination configuration. Engineering teams that track user events and pipe them to Snowflake, BigQuery, or Amplitude without the Segment bill get a real cost save here. The routing logic is comparable to Segment. Self-hosted means you control data residency. The catch: the self-hosted control plane is less polished than the cloud version. Destination support can lag Segment. And high event volumes require serious infrastructure to match Segment's managed reliability.

ossinsight2.4k★

OSSInsight crunches over 10 billion GitHub events to show you what's actually happening in open source. Star velocity, contributor growth, PR merge rates, issue response times, head-to-head repo comparisons. The hosted version at ossinsight.io is free and requires no account. GitHub's built-in Insights tab looks like a toy next to this. The platform is powered by TiDB (PingCAP's distributed database), which is the quiet part out loud: this project exists partly as a TiDB showcase. That said, the analytics are genuinely useful. Curated collections track trends across AI frameworks, databases, LLM tools, and more. The Data Explorer lets you write custom SQL against the full GitHub event archive. Developers evaluating which project to adopt get real data instead of vibes. Open source maintainers track their project's health metrics. Anyone doing market research on developer tools gets a free analytics platform that would cost thousands to build from BigQuery. The catch: public GitHub data only, no private repos. Self-hosting requires TiDB plus terabytes of ingested archive data, which is realistic only for organizations with dedicated infrastructure teams. And since PingCAP built this as marketing, long-term independent maintenance is an open question.