head to head · open source
Kestra vs FluentScheduler
Kestra has 28,146 GitHub stars, 2,997 forks, 713 open issues and last shipped yesterday. FluentScheduler has 2,768 stars, 410 forks, 21 open issues and last shipped 6 months ago. Kestra leads on adoption by 917% (28,146 vs 2,768 stars). Kestra is written in Java under Apache-2.0; FluentScheduler is written in C# under Unlicense. Kestra has attracted 11% as many forks as stars, FluentScheduler 15%. Kestra was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 8884 open source comparisons
Side by side
| Kestra | FluentScheduler | |
|---|---|---|
| GitHub stars | ★ 28K | ★ 2.8K |
| License | Apache-2.0 | Unlicense |
| Written in | Java | C# |
| Last push | 2026-09-17 | 2026-03-19 |
| Forks | ⑂ 3.0K | ⑂ 410 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Kestra if
- You weight community size — 28K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Java
- You value the larger contributor base for long-term maintenance
pick FluentScheduler if
- You want the FluentScheduler feature set and don't need the biggest community
- You prefer the Unlicense license terms
- Your stack matches C#
- You evaluated both and FluentScheduler fits your workflow better
About Kestra
Kestra is an open source, event driven orchestration platform for data, AI, and infrastructure workflows. It operates in the Java based ecosystem and is licensed under Apache 2.0. The project provides a unified interface for both scheduled and real time automation, supporting declarative workflow definitions in YAML while also offering visual and AI assisted authoring.
read the full Kestra overview →
About FluentScheduler
FluentScheduler is automated job scheduler with fluent interface for .NET platform. Repository facts list language as C , license as Unlicense, category as Infrastructure & Operations / Orchestration & Scheduling, topics as fluent and scheduler, stars as 2767, forks as 410, age as 14 years, last push as 2026 03 19T02:17:27Z, and open issues as 21. README shows C program creating Schedule object, passing console output action, configuring run callback with Every(5).Minutes(), then calling Start.
read the full FluentScheduler overview →
More in Infrastructure & Operations
Related comparisons
More Orchestration & Scheduling projects
Compare either of these against the rest of the Orchestration & Scheduling field.
Frequently asked questions
Is Kestra or FluentScheduler more popular?
Kestra has 28,146 GitHub stars and FluentScheduler has 2,768. Kestra has the larger community by that measure.
Are Kestra and FluentScheduler free?
Both are open source. Kestra is licensed under Apache-2.0 and FluentScheduler under Unlicense. Neither carries a licence fee.
What is the difference between Kestra and FluentScheduler?
Kestra is written in Java and FluentScheduler in C#. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Kestra or FluentScheduler?
Choose Kestra if you want the larger community (28,146 stars) or its Apache-2.0 licence terms. Choose FluentScheduler if its feature set, stack or Unlicense licence fits better. Both are self-hostable.