head to head · open source
fluvio vs docetl
fluvio has 5,257 GitHub stars, 530 forks, 139 open issues and last shipped 21 days ago. docetl has 4,101 stars, 443 forks, 45 open issues and last shipped 15 days ago. fluvio leads on adoption by 28% (5,257 vs 4,101 stars). fluvio is written in Rust under Apache-2.0; docetl is written in Python under MIT. fluvio has attracted 10% as many forks as stars, docetl 11%. docetl was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (data-pipelines), 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 | docetl | |
|---|---|---|
| GitHub stars | ★ 5.3K | ★ 4.1K |
| License | Apache-2.0 | MIT |
| Written in | Rust | Python |
| Last push | 2026-08-30 | 2026-09-05 |
| Forks | ⑂ 530 | ⑂ 443 |
| 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 docetl if
- You want the docetl feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and docetl 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 docetl
DocETL is a Python system for agentic LLM powered data processing and ETL. It lives in the data engineering and document processing ecosystem, where pipelines must turn structured records and unstructured documents into queryable tables. Users describe each operation in natural language, and DocETL provides operators such as map, reduce, and filter, then orchestrates them across the data.
read the full docetl overview →
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Frequently asked questions
Is fluvio or docetl more popular?
fluvio has 5,257 GitHub stars and docetl has 4,101. fluvio has the larger community by that measure.
Are fluvio and docetl free?
Both are open source. fluvio is licensed under Apache-2.0 and docetl under MIT. Neither carries a licence fee.
What is the difference between fluvio and docetl?
fluvio is written in Rust and docetl in Python. 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 docetl?
Choose fluvio if you want the larger community (5,257 stars) or its Apache-2.0 licence terms. Choose docetl if its feature set, stack or MIT licence fits better. Both are self-hostable.