Abby vs Flagsmith
A side-by-side comparison of two self-hosted web analytics options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Abby
Open-source A/B testing and feature flags
VS
Flagsmith
Open-source feature flag and remote config service
| Feature | Abby | Flagsmith |
|---|---|---|
| Category | Web Analytics | Web Analytics |
| License | MIT | BSD-3-Clause |
| Language | TypeScript | Python |
| Setup difficulty | Medium | Medium |
| Min. RAM | 512 MB | 1,024 MB |
| Deployment | docker | docker, kubernetes, helm |
| GitHub stars | ★ 167 | ★ 6,505 |
| First released | 2023 | 2018 |
| Replaces | LaunchDarkly, Optimizely | LaunchDarkly |
Why pick each one
Choose Abby if…
- Released under the MIT license
- First-class Docker support for quick deployment
- Written in TypeScript
- Lightweight — runs in 512 MB RAM
Choose Flagsmith if…
- Released under the BSD-3-Clause license
- First-class Docker support for quick deployment
- Kubernetes-ready with Helm charts available
- Mature project with 6.5k GitHub stars
Frequently asked questions
Is Abby or Flagsmith better?
Neither is universally better. Flagsmith has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Abby and Flagsmith free and open-source?
Yes. Abby is licensed under MIT and Flagsmith under BSD-3-Clause. Both can be self-hosted at no software cost.
Can I run Abby and Flagsmith with Docker?
Abby: yes. Flagsmith: yes.