Fly.io
Jenkins
| Feature | Fly.io | Jenkins |
|---|---|---|
| Pricing | Free / from $0/mo | Free only |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.2 / 5 | 4.2 / 5 |
| Best For | full-stack-developers, global-apps, edge-computing, hobby-projects | enterprise-teams, on-premise-deployments, complex-pipelines, legacy-systems |
| Founded | 2017 | 2011 |
| Global Deployment | ✓ | ✗ |
| Firecracker Vms | ✓ | ✗ |
| Fly Postgres | ✓ | ✗ |
| Auto Scaling | ✓ | ✗ |
| Volumes | ✓ | ✗ |
| Private Networking | ✓ | ✗ |
| Gpu Support | ✓ | ✗ |
| Pipeline As Code | ✗ | ✓ |
| Plugins | ✗ | ✓ |
| Distributed Builds | ✗ | ✓ |
| Pipeline Visualization | ✗ | ✓ |
| Scm Integration | ✗ | ✓ |
| Artifact Management | ✗ | ✓ |
| Notifications | ✗ | ✓ |
✓ Fly.io Pros
- Deploy apps globally to 30+ regions easily
- Built-in Postgres and Redis for data at the edge
- Generous free tier for hobby projects
- Firecracker VMs start in milliseconds
✗ Fly.io Cons
- Operational complexity for simple apps
- Documentation can be hard to navigate
- Billing surprises if auto-scaling triggers unexpectedly
✓ Jenkins Pros
- Completely free and open source
- Extremely extensible with 1,800+ plugins
- Mature and battle-tested over many years
- Supports any programming language and platform
✗ Jenkins Cons
- Dated UI feels old compared to modern CI tools
- Requires significant maintenance and administration
- Groovy-based Jenkinsfiles have steep learning curve
The Verdict
Fly.io is built for full stack developers and global apps, with a focus on global-deployment and firecracker-vms. Jenkins targets enterprise teams and on premise deployments and leads with pipeline-as-code and plugins.
Jenkins uses custom enterprise pricing, while Fly.io starts at $0/mo — a tangible advantage for teams with a fixed budget.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.