head to head · open source
CocoIndex vs seatunnel
CocoIndex has 11,566 GitHub stars, 899 forks, 83 open issues and last shipped 2 days ago. seatunnel has 9,655 stars, 2,413 forks, 705 open issues and last shipped yesterday. CocoIndex leads on adoption by 20% (11,566 vs 9,655 stars). CocoIndex is written in Rust under Apache-2.0; seatunnel is written in Java under Apache-2.0. CocoIndex has attracted 8% as many forks as stars, seatunnel 25%. seatunnel was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (change-data-capture), 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
| CocoIndex | seatunnel | |
|---|---|---|
| GitHub stars | ★ 12K | ★ 9.7K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Rust | Java |
| Last push | 2026-09-16 | 2026-09-17 |
| Forks | ⑂ 899 | ⑂ 2.4K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick CocoIndex if
- You weight community size — 12K 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 seatunnel if
- You want the seatunnel feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and seatunnel fits your workflow better
About CocoIndex
CocoIndex is an open source incremental data transformation engine for AI workloads, built in Rust with a Python interface and positioned in the data engineering, ETL, indexing, and AI agent ecosystem. It turns codebases, meeting notes, inboxes, Slack, PDFs, and videos into continuously fresh context for AI agents and LLM applications.
read the full CocoIndex overview →
About seatunnel
Apache SeaTunnel is a multimodal, high performance, distributed data integration tool that is capable of synchronizing vast amounts of data daily. It is an Apache Software Foundation project written in Java and released under the Apache 2.0 license, with a home on the web at seatunnel.apache.org. The project has been in development for roughly nine years and has accumulated 9,652 stars and 2,407 forks on GitHub. It sits in the Data & Analytics ecosystem, specifically in data engineering and integration, and it is built around a connector driven model: sources, sinks, and transforms are configured as jobs, and tho…
read the full seatunnel overview →
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Frequently asked questions
Is CocoIndex or seatunnel more popular?
CocoIndex has 11,566 GitHub stars and seatunnel has 9,655. CocoIndex has the larger community by that measure.
Are CocoIndex and seatunnel free?
Both are open source. CocoIndex is licensed under Apache-2.0 and seatunnel under Apache-2.0. Neither carries a licence fee.
What is the difference between CocoIndex and seatunnel?
CocoIndex is written in Rust and seatunnel in Java. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, CocoIndex or seatunnel?
Choose CocoIndex if you want the larger community (11,566 stars) or its Apache-2.0 licence terms. Choose seatunnel if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.