head to head · open source
shardingsphere vs chunjun
shardingsphere has 20,817 GitHub stars, 6,906 forks, 197 open issues and last shipped yesterday. chunjun has 4,106 stars, 1,683 forks, 287 open issues and last shipped 25 days ago. shardingsphere leads on adoption by 407% (20,817 vs 4,106 stars). shardingsphere is written in Java under Apache-2.0; chunjun is written in Java under Apache-2.0. shardingsphere has attracted 33% as many forks as stars, chunjun 41%. shardingsphere was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (bigdata), 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
| shardingsphere | chunjun | |
|---|---|---|
| GitHub stars | ★ 21K | ★ 4.1K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Java | Java |
| Last push | 2026-11-02 | 2026-10-09 |
| Forks | ⑂ 6.9K | ⑂ 1.7K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick shardingsphere if
- You weight community size — 21K 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 chunjun if
- You want the chunjun 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 chunjun fits your workflow better
About shardingsphere
Apache ShardingSphere Enterprise Distributed Database Ecosystem Building the standards and ecosystem on top of heterogeneous databases, empowering enterprise data architecture transformation Official Website: OVERVIEW Apache ShardingSphere is positioned as Database Plus , a standard and ecosystem built on top of heterogeneous databases. As an operating system layer above databases, ShardingSphere does not create new databases but focuses on maximizing the computing capabilities of existing databases, providing unified data access and enhanced computing capabilities. Database Plus Core Concept : By building a…
read the full shardingsphere overview →
About chunjun
ChunJun Introduce ChunJun is a distributed integration framework, and currently is based on Apache Flink. It was initially known as FlinkX and renamed ChunJun on February 22, 2022. It can realize data synchronization and calculation between various heterogeneous data sources. ChunJun has been deployed and running stably in thousands of companies so far. Official website of ChunJun: Features of ChunJun ChunJun abstracts different databases into reader/source plugins, writer/sink plugins and lookup plugins, and it has the following features: Based on the real time computing engine Flink, and supports JSON template…
read the full chunjun overview →
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Frequently asked questions
Is shardingsphere or chunjun more popular?
shardingsphere has 20,817 GitHub stars and chunjun has 4,106. shardingsphere has the larger community by that measure.
Are shardingsphere and chunjun free?
Both are open source. shardingsphere is licensed under Apache-2.0 and chunjun under Apache-2.0. Neither carries a licence fee.
What is the difference between shardingsphere and chunjun?
shardingsphere is written in Java and chunjun 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, shardingsphere or chunjun?
Choose shardingsphere if you want the larger community (20,817 stars) or its Apache-2.0 licence terms. Choose chunjun if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.