head to head · open source
peerdb vs pgsync
peerdb has 3,314 GitHub stars, 232 forks, 204 open issues and last shipped 2 days ago. pgsync has 1,433 stars, 213 forks, 216 open issues and last shipped 2 days ago. peerdb leads on adoption by 131% (3,314 vs 1,433 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 | 2026-11-03 | 2026-11-03 |
| Forks | ⑂ 232 | ⑂ 213 |
| 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
Frustratingly simple ETL for Postgres PeerDB At PeerDB, we are building a fast, simple and the most cost effective way to stream data from Postgres to Data Warehouses, Queues and Storage engines. If you are running Postgres at the heart of your data stack and move data at scale from Postgres to any of the above targets, PeerDB can provide value. We support different modes of streaming log based (CDC), cursor based (timestamp or integer) and XMIN based. Performance wise, we are 10x faster than existing tools. Features wise, we support native Postgres features such as comprehensive set of data types incl…
read the full peerdb 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…
read the full pgsync overview →
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Frequently asked questions
Is peerdb or pgsync more popular?
peerdb has 3,314 GitHub stars and pgsync has 1,433. 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 (3,314 stars) or its AGPL-3.0 licence terms. Choose pgsync if its feature set, stack or MIT licence fits better. Both are self-hostable.