Flagsmith
Dashboard, API and SDKs for adding Feature Flags to your applications (alternative to LaunchDarkly).
Flagsmith vs PostHog
Two self-hosted Software Development - Feature Toggle apps, compared on the facts we track: GitHub popularity and activity, license, language, Docker images and a rough hosting estimate.
Side by side
| Flagsmith | PostHog | |
|---|---|---|
| Description | Dashboard, API and SDKs for adding Feature Flags to your applications (alternative to LaunchDarkly). | Product analytics, session recording, feature flagging and a/b testing that you can self-host (alternative to Mixpanel, Amplitude, Heap). |
| GitHub stars | 6,640 | 40,646 |
| Forks | – | – |
| Open issues | – | – |
| Commits (12 months) | 1.4k | 42k |
| Last activity | 2026-11-04 | 2026-11-05 |
| Latest release | v2.288.2 (2026-10-29) | desktop-v0.61.943 (2026-11-05) |
| Maintenance health | Active | Active |
| License | BSD-3-Clause | MIT |
| Language / platform | Docker, K8S | Python |
| Docker Hub image | – | – |
| Docker pulls | – | – |
| Est. server size | ~1 GB, 1 vCPU | ~2 GB, 1 vCPU |
| Est. hosting from | $5/mo | $10/mo |
| Categories | Software Development - Feature Toggle | Analytics, Software Development - Feature Toggle |
| Links | Website · Source | Website · Source |
What the numbers say
- PostHog is more popular on GitHub: 40.6k stars vs 6.6k for Flagsmith.
- PostHog had more commits in the last 12 months (42,010 vs 1,355).
- PostHog published a release more recently (desktop-v0.61.943 on 2026-11-05; Flagsmith's latest is v2.288.2 on 2026-10-29).
- Flagsmith is licensed under BSD-3-Clause, PostHog under MIT.
- PostHog is written in Python; the language of Flagsmith is not listed upstream.
- Deployment options listed upstream: Flagsmith: Docker, K8S; PostHog: none listed.
- Our rough hardware estimate is lighter for Flagsmith (~1 GB server) than PostHog (~2 GB); this is an estimate from the stack and category, not a benchmark.
Summary: PostHog leads on GitHub popularity and commit activity. The right choice depends on the features you need — read both project descriptions and docs.
This summary is generated from GitHub, Docker Hub and awesome-selfhosted data as of 2026-11-05. It does not rate features or quality.
Frequently asked questions
Is Flagsmith or PostHog more popular?
PostHog has more GitHub stars (40,646 vs 6,640 for Flagsmith, as of 2026-11-05). Stars measure interest, not quality.
Which is more actively maintained, Flagsmith or PostHog?
PostHog had more commits over the last 12 months (42,010 vs 1,355). The last recorded activity was 2026-11-04 for Flagsmith and 2026-11-05 for PostHog. Our health labels: Flagsmith is “Active”, PostHog is “Active”.
What licenses do Flagsmith and PostHog use?
Flagsmith: BSD-3-Clause. PostHog: MIT.
Can I run Flagsmith and PostHog with Docker?
We did not detect a Docker Hub image for either app. The upstream listing mentions Docker as a deployment option for Flagsmith. Check each project's documentation for install options.
Read more
PostHog
Product analytics, session recording, feature flagging and a/b testing that you can self-host (alternative to Mixpanel, Amplitude, Heap).
Browse all self-hosted Software Development - Feature Toggle apps.