head to head · open source
fluvio vs olake
fluvio has 5,257 GitHub stars, 530 forks, 139 open issues and last shipped 22 days ago. olake has 1,453 stars, 252 forks, 178 open issues and last shipped 2 days ago. fluvio leads on adoption by 262% (5,257 vs 1,453 stars). fluvio is written in Rust under Apache-2.0; olake is written in Go under Apache-2.0. fluvio has attracted 10% as many forks as stars, olake 17%. olake 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 | olake | |
|---|---|---|
| GitHub stars | ★ 5.3K | ★ 1.5K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Rust | Go |
| Last push | 2026-08-30 | 2026-09-19 |
| Forks | ⑂ 530 | ⑂ 252 |
| 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 olake if
- You want the olake 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 olake 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 olake
OLake Go is an open source data ingestion engine written in Go and licensed under Apache 2.0. It replicates transactional databases, Apache Kafka, and S3 into Apache Iceberg or plain Parquet, and it provides a web UI and a command line interface for building scalable, real time pipelines. The project sits in the Apache Iceberg and lakehouse ecosystem, where its stated goal is to move data into vendor neutral table formats that can be read by query engines and warehouses.
read the full olake overview →
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Frequently asked questions
Is fluvio or olake more popular?
fluvio has 5,257 GitHub stars and olake has 1,453. fluvio has the larger community by that measure.
Are fluvio and olake free?
Both are open source. fluvio is licensed under Apache-2.0 and olake under Apache-2.0. Neither carries a licence fee.
What is the difference between fluvio and olake?
fluvio is written in Rust and olake 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 olake?
Choose fluvio if you want the larger community (5,257 stars) or its Apache-2.0 licence terms. Choose olake if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.