Robusta vs Apache SkyWalking
A side-by-side comparison of two self-hosted monitoring & status options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Robusta | Apache SkyWalking |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Health score | 87 · Excellent | 97 · Excellent |
| Category | Monitoring & Status | Monitoring & Status |
| License | MIT | Apache-2.0 |
| Language | Python | Java |
| Setup difficulty | Medium | Hard |
| Min. RAM | 256 MB | 2,048 MB |
| Deployment | kubernetes, helm | docker, kubernetes, helm |
| GitHub stars | ★ 3,101 | ★ 24,962 |
| First released | 2021 | 2015 |
| Replaces | Datadog, PagerDuty | New Relic, Datadog |
What are Robusta and Apache SkyWalking?
Robusta
Robusta enhances Prometheus alerts for Kubernetes with enriched context, automated troubleshooting, and notifications to Slack and other channels. It helps teams understand and respond to cluster issues faster.
- Enriched Kubernetes alerts
- Automated remediation playbooks
- Slack and Teams notifications
- Crash and OOM diagnostics
Apache SkyWalking
Apache SkyWalking is an APM and observability platform for distributed systems, especially microservices and cloud-native architectures. It provides tracing, metrics, logging, and service topology analysis.
- Distributed tracing and metrics
- Service topology maps
- eBPF and OTel integration
- Alerting engine
Robusta vs Apache SkyWalking: key differences
Robusta is written in Python, while Apache SkyWalking is built with Java. Licensing differs — MIT for Robusta versus Apache-2.0 for Apache SkyWalking. Robusta is the lighter option, starting around 256 MB of RAM against 2,048 MB for Apache SkyWalking. Apache SkyWalking is the more established project (first released 2015), while Robusta arrived in 2021. Apache SkyWalking has the considerably larger community, at 24,962 GitHub stars versus 3,101. Apache SkyWalking lists first-class Docker deployment; Robusta does not.
Why pick each one
Choose Robusta if…
- Makes alerts actionable
- Strong Kubernetes focus
Watch out for
- Kubernetes only
- Best with Prometheus already running
Choose Apache SkyWalking if…
- Full observability suite
- Strong Apache governance
Watch out for
- Steep learning curve
- Storage backend required
Frequently asked questions
Is Robusta or Apache SkyWalking better?
Neither is universally better. Apache SkyWalking has the larger community, while Robusta is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.
Are Robusta and Apache SkyWalking free and open-source?
Yes. Robusta is licensed under MIT and Apache SkyWalking under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Robusta and Apache SkyWalking with Docker?
Robusta: check the project docs for container support. Apache SkyWalking: yes.
Which is lighter on resources, Robusta or Apache SkyWalking?
Robusta has the smaller minimum footprint at 256 MB of RAM, compared to about 2,048 MB for Apache SkyWalking. Real-world usage depends on library size, user count, and enabled features.