Abby vs Unleash
A side-by-side comparison of two self-hosted web analytics options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Abby | Unleash |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 20 · At risk | 94 · Excellent |
| Category | Web Analytics | Web Analytics |
| License | MIT | Apache-2.0 |
| Language | TypeScript | TypeScript |
| Setup difficulty | Medium | Medium |
| Min. RAM | 512 MB | 1,024 MB |
| Deployment | docker | docker, kubernetes, helm |
| GitHub stars | ★ 166 | ★ 13,822 |
| First released | 2023 | 2014 |
| Replaces | LaunchDarkly, Optimizely | LaunchDarkly, Split |
What are Abby and Unleash?
Abby
Abby is an open-source platform for A/B testing and feature flags that can be self-hosted. It reports conversion metrics and lets teams roll out features gradually.
- A/B testing
- Feature flags
- Conversion metrics
- Gradual rollouts
Unleash
Unleash is an open-source feature management platform for controlling feature rollouts and running experiments. It is built for self-hosting with strong privacy and scalability.
- Feature toggles
- Gradual rollouts
- Experimentation
- Privacy focused
Abby vs Unleash: key differences
Both projects are written in TypeScript. Licensing differs — MIT for Abby versus Apache-2.0 for Unleash. Abby is the lighter option, starting around 512 MB of RAM against 1,024 MB for Unleash. Unleash is the more established project (first released 2014), while Abby arrived in 2023. Unleash has the considerably larger community, at 13,822 GitHub stars versus 166.
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 Unleash if…
- SDKs for many languages
- Simple Docker deployment
- Mature and well documented
Watch out for
- Some features enterprise-only
- Needs PostgreSQL
Frequently asked questions
Is Abby or Unleash better?
Neither is universally better. Unleash has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Abby and Unleash free and open-source?
Yes. Abby is licensed under MIT and Unleash under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Abby and Unleash with Docker?
Abby: yes. Unleash: yes.
Which is lighter on resources, Abby or Unleash?
Abby has the smaller minimum footprint at 512 MB of RAM, compared to about 1,024 MB for Unleash. Real-world usage depends on library size, user count, and enabled features.