head to head · open source
fluvio vs whodb
fluvio has 5,257 GitHub stars, 530 forks, 139 open issues and last shipped 21 days ago. whodb has 5,033 stars, 240 forks, 42 open issues and last shipped today. fluvio leads on adoption by 4% (5,257 vs 5,033 stars). fluvio is written in Rust under Apache-2.0; whodb is written in Go under Apache-2.0. fluvio has attracted 10% as many forks as stars, whodb 5%. whodb was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (data-integration), so they are genuine substitutes rather than adjacent tools.
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 | whodb | |
|---|---|---|
| GitHub stars | ★ 5.3K | ★ 5.0K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Rust | Go |
| Last push | 2026-08-30 | 2026-09-20 |
| Forks | ⑂ 530 | ⑂ 240 |
| 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 whodb if
- You want the whodb feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and whodb 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 whodb
WhoDB is an Apache 2.0, Go based open source data workspace that gives users one place to explore databases, edit data, run queries, and understand how a schema fits together. It runs in the browser, is available as a desktop application, and also provides a terminal CLI, so it fits the open source data engineering and integration ecosystem for internal tools, data platforms, database management, data governance, data integration, data pipelines, data catalogs, data lineage, and ER diagrams.
read the full whodb overview →
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Frequently asked questions
Is fluvio or whodb more popular?
fluvio has 5,257 GitHub stars and whodb has 5,033. fluvio has the larger community by that measure.
Are fluvio and whodb free?
Both are open source. fluvio is licensed under Apache-2.0 and whodb under Apache-2.0. Neither carries a licence fee.
What is the difference between fluvio and whodb?
fluvio is written in Rust and whodb in Go. 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 whodb?
Choose fluvio if you want the larger community (5,257 stars) or its Apache-2.0 licence terms. Choose whodb if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.