head to head · open source
shardingsphere vs pgsync
shardingsphere has 20,800 GitHub stars, 6,901 forks, 197 open issues and last shipped today. pgsync has 1,421 stars, 212 forks, 216 open issues and last shipped 7 days ago. shardingsphere leads on adoption by 1,364% (20,800 vs 1,421 stars). shardingsphere is written in Java under Apache-2.0; pgsync is written in Python under MIT. shardingsphere has attracted 33% as many forks as stars, pgsync 15%. shardingsphere was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (mysql), 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 | pgsync | |
|---|---|---|
| GitHub stars | ★ 21K | ★ 1.4K |
| License | Apache-2.0 | MIT |
| Written in | Java | Python |
| Last push | 2026-09-18 | 2026-09-11 |
| Forks | ⑂ 6.9K | ⑂ 212 |
| 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 pgsync if
- You want the pgsync feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and pgsync fits your workflow better
About shardingsphere
Apache ShardingSphere is an Apache 2.0 licensed, Java based distributed database ecosystem positioned as Database Plus — a standards and enhancement layer that sits above heterogeneous databases so applications can connect to, govern, and compute across them as if they were one database, aimed at enterprise data architects and developers running sharded, multi database estates.
read the full shardingsphere overview →
About pgsync
PGSync Real time PostgreSQL to Elasticsearch/OpenSearch sync Keep your relational database as the source of truth while powering lightning fast search Live Demo ↗ · Website · Documentation · Examples · Report Bug What is PGSync? PGSync is a change data capture tool that syncs data from PostgreSQL , MySQL , or MariaDB to Elasticsearch or OpenSearch in real time. Define your document structure in JSON, and PGSync handles the rest — no custom code required. Django integration: Use django pgsync to integrate PGSync with Django projects. PGSync Pro: Add real time semantic and hybrid search to Elasticsearch or OpenSear…
read the full pgsync overview →
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Frequently asked questions
Is shardingsphere or pgsync more popular?
shardingsphere has 20,800 GitHub stars and pgsync has 1,421. shardingsphere has the larger community by that measure.
Are shardingsphere and pgsync free?
Both are open source. shardingsphere is licensed under Apache-2.0 and pgsync under MIT. Neither carries a licence fee.
What is the difference between shardingsphere and pgsync?
shardingsphere is written in Java and pgsync 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, shardingsphere or pgsync?
Choose shardingsphere if you want the larger community (20,800 stars) or its Apache-2.0 licence terms. Choose pgsync if its feature set, stack or MIT licence fits better. Both are self-hostable.