Best Open-Source Amplitude Alternatives (2026)
3 self-hostable, open-source projects that replace Amplitude — without expensive once you outgrow the free tier. Each is scored for how hard it is to self-host, with one-click deploy options where they exist.
Amplitude's free tier is generous until your event volume grows, then pricing scales sharply and the useful retention/behavioral features sit behind paid plans. Teams also leave to keep raw event data and PII on their own infrastructure instead of shipping it to a third-party cloud.
Our picks at a glance
At difficulty 4/5 it is the lowest-effort of the three and ships with a straightforward Docker Compose deploy.
It is the only all-in-one here, bundling product analytics, session replay, feature flags, and A/B testing in one platform.
It offers official managed (cloud) hosting and is the most feature-complete, so the hosted tier replaces Amplitude most directly.
Compare all 3 alternatives
Tap a column header to sort| Project | Deploy | Managed | License | ||||
|---|---|---|---|---|---|---|---|
 PostHog Python | 35k ★ | 5/5 Advanced | Docker Compose Kubernetes +1 | MIT | 3 days ago | Repo | |
 OpenReplay TypeScript | 12k ★ | 5/5 Advanced | Kubernetes Docker Compose +1 | Apache-2.0 | 5 days ago | Repo | |
 Countly JavaScript | 5.9k ★ | 4/5 Involved | Docker Compose Manual | AGPL-3.0 | 6 days ago | Repo |
What to look for: Decide whether you need just product analytics or the full stack (session replay, feature flags, experiments) in one place, because that determines how heavy the deployment is. All three options here are event-pipeline systems, so budget for the database/ingestion load and confirm the managed tier exists if you don't want to run ClickHouse or similar yourself.
The alternatives, reviewed
- #1
PostHogSelf-host: AdvancedAll-in-one product analytics, session replay, feature flags, and A/B testing
35k Python MIT 3 days agoHow it compares to Amplitude
- Self-hosting the full ClickHouse + Kafka + Postgres + Redis stack is heavy; the project actively steers smaller users toward PostHog Cloud.
- Some enterprise features live under a separate proprietary
eelicense, not pure MIT. - The all-in-one breadth means it is more complex to operate than a focused tool like Mixpanel.
- #2
OpenReplaySelf-host: AdvancedSelf-hosted session replay and product analytics for web apps
12k TypeScript Apache-2.0 5 days agoHow it compares to Amplitude
- Self-hosting requires a Kubernetes-based multi-service stack; resource-hungry and complex to operate.
- Product-analytics features (funnels, cohorts) are less mature than Amplitude/Mixpanel.
- No traditional aggregate web-analytics dashboard; it is session-centric.
- #3
CountlySelf-host: InvolvedPrivacy-first product analytics for web, mobile, and desktop apps
5.9k JavaScript AGPL-3.0 6 days agoHow it compares to Amplitude
- Many advanced features (push notifications, A/B testing, some drill plugins) are reserved for the paid Enterprise Edition.
- The Community Edition documentation and upgrade path can be rough.
- UI and query speed lag behind ClickHouse-backed competitors at large scale.
The verdict
PostHog is the closest one-for-one Amplitude replacement: it matches the product-analytics core and adds replay, flags, and experiments, with both self-host and a managed cloud. Pick Countly if you specifically want a lighter, easier deployment.
Amplitude alternatives — frequently asked questions
What is the best open-source alternative to Amplitude?
PostHog is the most direct fit. It covers Amplitude's product-analytics features and also bundles session replay, feature flags, and A/B testing, is MIT-licensed, and offers both self-hosting and managed cloud.
Is there a free self-hosted Amplitude alternative?
Yes. PostHog (MIT), OpenReplay (Apache-2.0), and Countly (AGPL-3.0) are all free to self-host. PostHog and OpenReplay run on Kubernetes or Docker Compose; Countly runs on Docker Compose.
Which Amplitude alternative is easiest to self-host?
Countly, at difficulty 4/5, is the easiest of the three and deploys with Docker Compose. PostHog and OpenReplay are both rated 5/5 because of their heavier multi-service architecture.
Do any of these offer hosted (managed) plans so I don't have to run servers?
Yes, all three (PostHog, OpenReplay, and Countly) offer an official managed hosting option, so you can start in the cloud and move to self-hosting later if you want full data ownership.
I want session replay, not just charts. Which should I pick?
PostHog and OpenReplay both include session replay; OpenReplay is replay-first. PostHog adds product analytics, flags, and experiments around it, while OpenReplay focuses on replay plus analytics for web apps.
Which is the most privacy-focused option?
Countly markets itself as privacy-first analytics for web, mobile, and desktop and is AGPL-3.0. Self-hosting any of the three already keeps event data on your own infrastructure rather than Amplitude's cloud.