head to head · open source
peerdb vs pgsync
peerdb has 3,274 GitHub stars, 213 forks, 204 open issues and last shipped yesterday. pgsync has 1,421 stars, 212 forks, 216 open issues and last shipped 9 days ago. peerdb leads on adoption by 130% (3,274 vs 1,421 stars). peerdb is written in Go under AGPL-3.0; pgsync is written in Python under MIT. peerdb has attracted 7% as many forks as stars, pgsync 15%. peerdb was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (etl, postgresql), 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
| peerdb | pgsync | |
|---|---|---|
| GitHub stars | ★ 3.3K | ★ 1.4K |
| License | AGPL-3.0 | MIT |
| Written in | Go | Python |
| Last push | 2026-09-19 | 2026-09-11 |
| Forks | ⑂ 213 | ⑂ 212 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick peerdb if
- You weight community size — 3.3K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Go
- 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 peerdb
PeerDB is a data integration project in the Postgres ecosystem. It lives in the Data & Analytics / Data Engineering & Integration category and focuses on streaming data from Postgres to data warehouses, queues, and storage engines. The project is built around Postgres first ETL and change data capture workflows rather than a broad connector catalog.
read the full peerdb overview →
About pgsync
PGSync is a change data capture tool that syncs PostgreSQL, MySQL, or MariaDB to Elasticsearch or OpenSearch in real time, aimed at teams that want to keep a relational database as the source of truth while serving fast search from a separate index.
read the full pgsync overview →
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Frequently asked questions
Is peerdb or pgsync more popular?
peerdb has 3,274 GitHub stars and pgsync has 1,421. peerdb has the larger community by that measure.
Are peerdb and pgsync free?
Both are open source. peerdb is licensed under AGPL-3.0 and pgsync under MIT. Neither carries a licence fee.
What is the difference between peerdb and pgsync?
peerdb is written in Go 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, peerdb or pgsync?
Choose peerdb if you want the larger community (3,274 stars) or its AGPL-3.0 licence terms. Choose pgsync if its feature set, stack or MIT licence fits better. Both are self-hostable.