Closest to June
PostHog is the closest all-in-one: product analytics with feature flags, A/B testing, and session recording, self-hosted or in its cloud. OpenReplay focuses on session replay with funnels, journeys, and heatmaps.
Alternatives / June
5 open-source alternatives
5 Best Open Source June Alternatives in 2026
Looking for an open source June alternative? We compared 5 open source product analytics and event tracking tools by license, session replay, self-hosting, and maintenance. PostHog is the broadest, while Trench and Aptabase are lighter and Countly has a restricted free edition.
Written by Maxime DERAME
Last updated:
Best June alternatives at a glance
| Alternative | Best for | License |
|---|---|---|
| PostHog | Product analytics with flags and experiments | MIT + ee directory |
| OpenReplay | Session replay with funnels and heatmaps | AGPL-3.0 + ee directory |
| Countly | Mobile, web, and desktop analytics | Countly Lite license (restricted) |
| Aptabase | Privacy-first app analytics | AGPL-3.0 |
| Trench | Event tracking on ClickHouse and Kafka | MIT |
How we chose these June alternatives
We looked for open-source tools that track user events and product usage like June. We verified each project's license, recent activity, stars, and self-hosting in its repository, and flag licenses that are not standard open source. See our methodology for the full criteria.
Lighter options
Trench is an MIT event tracking service built on ClickHouse and Kafka with SQL and REST querying and Segment-compatible events. Aptabase is privacy-first analytics for mobile and desktop apps with simple SDKs, and does not target web analytics.
Important: licenses to check
PostHog is MIT with an ee directory under a separate license, and OpenReplay is AGPL-3.0 with an ee directory. Countly's self-hosted edition is under a restricted Countly Lite license, so it is not standard open source.
License details
PostHog and Trench are MIT. OpenReplay and Aptabase are AGPL-3.0. Countly uses the Countly Lite license.
Maintenance status
PostHog, OpenReplay, Countly, and Aptabase had commits within days or weeks of this update. Trench's last commit was in April 2026.
Why look for a June alternative?
June is a proprietary SaaS focused on B2B product analytics, so your event data lives on its servers and pricing follows tracked users. Open-source tools can be self-hosted, keep data on your infrastructure, and avoid per-user pricing, but they have less B2B-specific reporting out of the box.
posthog.com
PostHog is a product analytics suite with event analytics, funnels, retention, experiments, feature flags, and session recording, available self-hosted or in PostHog Cloud. The repository is MIT except for the ee directory, which has its own license.
40.3K3.5KMIT + ee directorySelf-hosted
Pricing: Free to self-host the open-source parts; the cloud has a free tier and usage-based pricing.
- Broad product analytics with experiments and flags
- Session recording and surveys
- Very large community
- The ee directory has a separate license
- Self-hosting at scale is heavy
openreplay.com
OpenReplay is a self-hostable session replay and product analytics platform with co-browsing, heatmaps, and error tracking. It is AGPL-3.0 with an ee directory, and enterprise features such as SSO are in its paid editions. Self-hosting in production is free.
13K867AGPL-3.0 + ee directorySelf-hosted
Pricing: Free to self-host; cloud and enterprise plans are paid.
- Session replay with co-browsing and heatmaps
- Self-hosting for data control
- Active development
- Enterprise features are paid
- Heavy to run at scale
countly.com
Countly is a privacy-first analytics and engagement platform for mobile, web, and desktop applications, with real-time monitoring and crash reports, available in a free Community edition and a paid Enterprise edition. The free edition is covered by the Countly Lite license, which is not a standard open-source license and restricts non-commercial use.
5.9K980Countly Lite license (restricted)Self-hosted
Pricing: Free Lite edition under its license; Enterprise is paid.
- Mobile, web, and desktop analytics
- Crash reports and real-time monitoring
- Cloud and self-hosted options
- Custom license that restricts commercial use
- Enterprise features are paid
aptabase.com
Aptabase is an AGPL-3.0 open-source analytics tool for mobile, desktop, and web apps that is simple and privacy-first, with SDKs for many platforms. It is built for apps rather than websites and can be self-hosted.
1.8K141AGPL-3.0Self-hosted
Pricing: Free to self-host; the cloud is paid.
- Built for mobile and desktop apps
- Simple and privacy-first
- Self-hostable
- Not for website analytics
- AGPL-3.0 license
trench.dev
Trench is an MIT-licensed open-source analytics infrastructure in a single Docker image built on ClickHouse, Kafka, and Node.js for tracking events, queried with SQL or REST. Cloud features such as SLA and priority support belong to the managed offering, and the open-source version has community support only.
1.7K70MITSelf-hosted
Pricing: Free to self-host; the managed offering is paid.
- Event pipeline you can build on
- SQL and REST querying
- MIT license
- An infrastructure tool, not a dashboard
- Last commit in April 2026
Compare June alternatives
| Alternative | Type | License | Self-hosted | Best for |
|---|---|---|---|---|
| PostHog | Product analytics | MIT + ee | Yes | Closest replacement |
| OpenReplay | Session replay | AGPL-3.0 + ee | Yes | Debugging user journeys |
| Countly | Product analytics | Countly Lite (restricted) | Yes | Multi-platform apps |
| Aptabase | App analytics | AGPL-3.0 | Yes | Mobile and desktop apps |
| Trench | Event pipeline | MIT | Yes | High event volumes |
Which one should you choose?
Want a complete product analytics suite
PostHog adds feature flags, A/B testing, and session recording to analytics.
Want session replay and journeys
OpenReplay offers replay, funnels, journeys, and heatmaps, self-hosted.
Want analytics for mobile or desktop apps
Aptabase collects minimal data with simple SDKs and can be self-hosted.
Want to own the event pipeline
Trench handles high event volumes on ClickHouse and Kafka under MIT.