head to head · open source
seatunnel vs olake
seatunnel has 9,784 GitHub stars, 2,456 forks, 705 open issues and last shipped 2 days ago. olake has 1,576 stars, 273 forks, 178 open issues and last shipped 2 days ago. seatunnel leads on adoption by 521% (9,784 vs 1,576 stars). seatunnel is written in Java under Apache-2.0; olake is written in Go under Apache-2.0. seatunnel has attracted 25% 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. The two share 3 topic tags (cdc, change-data-capture, elt), 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
| seatunnel | olake | |
|---|---|---|
| GitHub stars | ★ 9.8K | ★ 1.6K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Java | Go |
| Last push | 2026-11-03 | 2026-11-03 |
| Forks | ⑂ 2.5K | ⑂ 273 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick seatunnel if
- You weight community size — 9.8K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Java
- 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 seatunnel
Apache SeaTunnel Overview SeaTunnel is a multimodal, high performance, distributed data integration tool, capable of synchronizing vast amounts of data daily. It's trusted by numerous companies for its efficiency and stability. Why Choose SeaTunnel SeaTunnel addresses common data integration challenges: Diverse Data Sources : Seamlessly integrates with hundreds of evolving data sources. Multimodal Data Integration : Supports the integration of video, images, binary files, structured and unstructured text data. Complex Synchronization Scenarios : Supports various synchronization methods, including real time, CDC…
read the full seatunnel overview →
About olake
OLake Go OLake Go is a high performance, open source data ingestion engine for replicating databases, S3, and Kafka into Apache Iceberg (or plain Parquet). Built for scalable, real time pipelines, OLake Go provides a simple web UI and CLI used to ingest into vendor lock in free Iceberg tables supporting all the query engines/warehouses. Read the docs and benchmarks at olake.io/docs . Join our active community on Slack . [!NOTE] 🎉 OLake Fusion is now live! — Automate your Apache Iceberg Table Maintenance. Check it out here → github.com/datazip inc/olake fusion 🎉 OLake Go — Super fast Sync to Apache Iceberg…
read the full olake overview →
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Frequently asked questions
Is seatunnel or olake more popular?
seatunnel has 9,784 GitHub stars and olake has 1,576. seatunnel has the larger community by that measure.
Are seatunnel and olake free?
Both are open source. seatunnel is licensed under Apache-2.0 and olake under Apache-2.0. Neither carries a licence fee.
What is the difference between seatunnel and olake?
seatunnel is written in Java 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, seatunnel or olake?
Choose seatunnel if you want the larger community (9,784 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.