head to head · open source
olake vs Addax
olake has 1,576 GitHub stars, 273 forks, 178 open issues and last shipped 2 days ago. Addax has 1,453 stars, 342 forks, 5 open issues and last shipped yesterday. olake leads on adoption by 8% (1,576 vs 1,453 stars). olake is written in Go under Apache-2.0; Addax is written in Java under Apache-2.0. olake has attracted 17% as many forks as stars, Addax 24%. Addax was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (database), 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
| olake | Addax | |
|---|---|---|
| GitHub stars | ★ 1.6K | ★ 1.5K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Java |
| Last push | 2026-11-03 | 2026-11-04 |
| Forks | ⑂ 273 | ⑂ 342 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick olake if
- You weight community size — 1.6K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick Addax if
- You want the Addax 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 Addax fits your workflow better
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 →
About Addax
Addax A versatile open source ETL tool Addax is an extensible ETL (Extract, Transform, Load) tool supporting over 20 SQL/NoSQL data sources, forked from Alibaba's DataX , which has been frozen since 2023 — Addax is its actively maintained successor. It provides a growing ecosystem of plugins and offers easy to follow configuration for data integrations. 简体中文 🚀 Features Supports 20+ SQL and NoSQL data sources, and easily extendable for more. Configurable via simple JSON based job descriptions. Actively maintained with improved architecture and added functionality compared to DataX. Docker images for quick…
read the full Addax overview →
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Frequently asked questions
Is olake or Addax more popular?
olake has 1,576 GitHub stars and Addax has 1,453. olake has the larger community by that measure.
Are olake and Addax free?
Both are open source. olake is licensed under Apache-2.0 and Addax under Apache-2.0. Neither carries a licence fee.
What is the difference between olake and Addax?
olake is written in Go and Addax 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, olake or Addax?
Choose olake if you want the larger community (1,576 stars) or its Apache-2.0 licence terms. Choose Addax if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.