head to head · open source
fluvio vs peerdb
fluvio has 5,257 GitHub stars, 530 forks, 139 open issues and last shipped 21 days ago. peerdb has 3,274 stars, 213 forks, 204 open issues and last shipped yesterday. fluvio leads on adoption by 61% (5,257 vs 3,274 stars). fluvio is written in Rust under Apache-2.0; peerdb is written in Go under AGPL-3.0. fluvio has attracted 10% as many forks as stars, peerdb 7%. peerdb was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (cloud-native, distributed-systems, rust), 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 | peerdb | |
|---|---|---|
| GitHub stars | ★ 5.3K | ★ 3.3K |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Rust | Go |
| Last push | 2026-08-30 | 2026-09-19 |
| Forks | ⑂ 530 | ⑂ 213 |
| 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 peerdb if
- You want the peerdb feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Go
- You evaluated both and peerdb 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 peerdb
PeerDB is a data integration project in the Postgres ecosystem. It lives in the Data & Analytics / Data Engineering & Integration category and focuses on streaming data from Postgres to data warehouses, queues, and storage engines. The project is built around Postgres first ETL and change data capture workflows rather than a broad connector catalog.
read the full peerdb overview →
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Frequently asked questions
Is fluvio or peerdb more popular?
fluvio has 5,257 GitHub stars and peerdb has 3,274. fluvio has the larger community by that measure.
Are fluvio and peerdb free?
Both are open source. fluvio is licensed under Apache-2.0 and peerdb under AGPL-3.0. Neither carries a licence fee.
What is the difference between fluvio and peerdb?
fluvio is written in Rust and peerdb 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 peerdb?
Choose fluvio if you want the larger community (5,257 stars) or its Apache-2.0 licence terms. Choose peerdb if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.