Kestra
Relay.app
| Feature | Kestra | Relay.app |
|---|---|---|
| Pricing | Free / from $100/mo | Free / from $16/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.4 / 5 | 4.3 / 5 |
| Best For | data-engineers, devops-teams, backend-developers, workflow-automation | operations-teams, agencies, small-businesses, compliance-teams |
| Founded | 2020 | 2021 |
| Workflow Orchestration | ✓ | ✗ |
| Scheduling | ✓ | ✗ |
| Event Triggers | ✓ | ✗ |
| Plugins | ✓ | ✗ |
| Monitoring | ✓ | ✗ |
| Secret Management | ✓ | ✗ |
| Multi Tenant | ✓ | ✗ |
| Workflow Builder | ✗ | ✓ |
| Ai Steps | ✗ | ✓ |
| Human Approvals | ✗ | ✓ |
| Multiplayer Editing | ✗ | ✓ |
| Integrations | ✗ | ✓ |
| Conditional Logic | ✗ | ✓ |
✓ Kestra Pros
- Open-source with full orchestration capabilities
- Declarative YAML workflows (GitOps friendly)
- 500+ plugins for data, cloud, and messaging services
- Real-time triggers, schedules, and event listeners
✗ Kestra Cons
- Less visual builder than no-code tools
- Learning curve for YAML workflow syntax
- Newer platform with smaller community than Airflow
✓ Relay.app Pros
- Human-in-the-loop approvals
- AI steps built in
- Collaborative workflows
- Clean modern interface
✗ Relay.app Cons
- Fewer integrations than Zapier
- Newer platform
- Limited advanced logic
The Verdict
Kestra is built for data engineers and devops teams, with a focus on workflow-orchestration and scheduling. Relay.app targets operations teams and agencies and leads with workflow-builder and ai-steps.
On pricing, Relay.app is the clear winner for budget-conscious users — starting at $16/mo compared to $100/mo for Kestra. That $84/mo difference adds up quickly for growing teams.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Feature-wise, Kestra offers broader built-in capabilities (7 features vs 6), while Relay.app takes a more focused approach — which can mean a simpler, faster onboarding experience.
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.