head to head · open source
fluvio vs Seal-Report
fluvio has 5,257 GitHub stars, 530 forks, 139 open issues and last shipped 21 days ago. Seal-Report has 1,635 stars, 508 forks, 21 open issues and last shipped 2 days ago. fluvio leads on adoption by 222% (5,257 vs 1,635 stars). fluvio is written in Rust under Apache-2.0; Seal-Report is written in C# under MIT. fluvio has attracted 10% as many forks as stars, Seal-Report 31%. Seal-Report 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.
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Side by side
| fluvio | Seal-Report | |
|---|---|---|
| GitHub stars | ★ 5.3K | ★ 1.6K |
| License | Apache-2.0 | MIT |
| Written in | Rust | C# |
| Last push | 2026-08-30 | 2026-09-18 |
| Forks | ⑂ 530 | ⑂ 508 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick fluvio if
- You weight community size — 5.3K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick Seal-Report if
- You want the Seal-Report feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C#
- You evaluated both and Seal-Report fits your workflow better
About fluvio
Fluvio is a distributed data streaming engine written in Rust, distributed under the Apache 2.0 license and developed in the fluvio community repository. It is described as composable, declarative and stateful: a streaming runtime that pairs with Stateful DataFlow, a distributed stream processing framework, so that a single system covers both the transport of event streams and the transformation of that data while it is in motion. The project sits in the Rust and cloud native ecosystem and is published on crates.io, with documentation hosted at fluvio.io.
read the full fluvio overview →
About Seal-Report
Seal Report & Task is open source database reporting and task framework written in C for Microsoft .NET. It lives in Data & Analytics and Data Engineering & Integration. It targets reports from SQL and NoSQL sources, plus ETL and batch tasks. License is MIT.
read the full Seal-Report overview →
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Frequently asked questions
Is fluvio or Seal-Report more popular?
fluvio has 5,257 GitHub stars and Seal-Report has 1,635. fluvio has the larger community by that measure.
Are fluvio and Seal-Report free?
Both are open source. fluvio is licensed under Apache-2.0 and Seal-Report under MIT. Neither carries a licence fee.
What is the difference between fluvio and Seal-Report?
fluvio is written in Rust and Seal-Report 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, fluvio or Seal-Report?
Choose fluvio if you want the larger community (5,257 stars) or its Apache-2.0 licence terms. Choose Seal-Report if its feature set, stack or MIT licence fits better. Both are self-hostable.