Apache NiFi vs Kestra
A side-by-side comparison of two self-hosted automation & workflows options — licensing, setup difficulty, resource needs, and what each one replaces.
Kestra
Declarative orchestration and scheduling platform
| Feature | Apache NiFi | Kestra |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 91 · Excellent | 97 · Excellent |
| Category | Automation & Workflows | Automation & Workflows |
| License | Apache-2.0 | Apache-2.0 |
| Language | Java | Java |
| Setup difficulty | Hard | Hard |
| Min. RAM | 2,048 MB | 1,024 MB |
| Deployment | docker, kubernetes, bare-metal | docker, kubernetes |
| GitHub stars | ★ 6,242 | ★ 28,316 |
| First released | 2014 | 2021 |
| Replaces | Azure Data Factory, Zapier | Zapier, Make |
What are Apache NiFi and Kestra?
Apache NiFi
Apache NiFi is a system to automate the flow of data between systems through a drag-and-drop interface. It supports routing, transformation and mediation of data with strong provenance tracking.
- Drag-and-drop dataflow design
- Detailed data provenance
- Hundreds of built-in processors
- Backpressure and prioritized queuing
Kestra
Kestra is an event-driven orchestration platform for building and scheduling data and automation workflows declared in YAML. It targets data engineers and platform teams. It is deployed via Docker.
- Declarative YAML workflows
- Event-driven and scheduled runs
- Rich plugin ecosystem
- Built-in UI and API
Apache NiFi vs Kestra: key differences
Both projects are written in Java. Kestra is the lighter option, starting around 1,024 MB of RAM against 2,048 MB for Apache NiFi. Apache NiFi is the more established project (first released 2014), while Kestra arrived in 2021. Kestra has the considerably larger community, at 28,316 GitHub stars versus 6,242.
Why pick each one
Choose Apache NiFi if…
- Powerful visual dataflow
- Strong data lineage
Watch out for
- Resource heavy
- Complex for simple tasks
Choose Kestra if…
- Strong for data orchestration
- Scalable architecture
- Open-source license
Watch out for
- Steeper learning curve
- Heavier resource needs
Frequently asked questions
Is Apache NiFi or Kestra better?
Neither is universally better. Kestra has the larger community; both share a hard setup difficulty, so the decision comes down to features and licensing.
Are Apache NiFi and Kestra free and open-source?
Yes. Apache NiFi is licensed under Apache-2.0 and Kestra under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Apache NiFi and Kestra with Docker?
Apache NiFi: yes. Kestra: yes.
Which is lighter on resources, Apache NiFi or Kestra?
Kestra has the smaller minimum footprint at 1,024 MB of RAM, compared to about 2,048 MB for Apache NiFi. Real-world usage depends on library size, user count, and enabled features.