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Top 23 Java Postgresql Projects
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Project mention: CLI to manage your SQL database schemas and migrations | news.ycombinator.com | 2025-11-01
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Chat2DB
AI-driven database tool and SQL client, The hottest GUI client, supporting MySQL, Oracle, PostgreSQL, DB2, SQL Server, DB2, SQLite, H2, ClickHouse, and more.
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shardingsphere
Empowering Data Intelligence with Distributed SQL for Sharding, Scalability, and Security Across All Databases.
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APIJSON
🏆 Real-Time no-code, powerful and secure ORM 🚀 providing APIs and Docs without coding by Backend, and Frontend(Client) can customize response JSONs 🏆 实时 零代码、全功能、强安全 ORM 库 🚀 后端接口和文档零代码，前端(客户端) 定制返回 JSON 的数据和结构
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If you are using Flyway for migrations (as we do on Libelo), put this in your first migration file and it will run once on initial database setup:
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Project mention: Flink CDC from the Trenches: Handling JSON in Pipelines with UDFs | dev.to | 2025-12-16
A critically important class that Flink CDC ships to perform type conversions internally is the DataTypeConverter, which you can find the source code for right here.
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JSqlParser
JSqlParser parses an SQL statement and translate it into a hierarchy of Java classes. The generated hierarchy can be navigated using the Visitor Pattern
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Crate
CrateDB is a distributed and scalable SQL database for storing and analyzing massive amounts of data in near real-time, even with complex queries. It is PostgreSQL-compatible, and based on Lucene.
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LakeSoul
LakeSoul is an end-to-end, realtime cloud-native Lakehouse framework for fast data ingestion, concurrent updates, incremental analytics, multimodal data processing and vector search — powering next-generation BI and AI workloads.
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Project mention: AI SQL Advisor integrated into a famous database tool | news.ycombinator.com | 2026-06-15
Questions and comments are welcome!
GitHub (https://github.com/Wisser/Jailer)
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Traditionally, JDBC interfaces are all synchronous, so JdbcTemplate and HibernateTemplate are also synchronous. But as asynchronous high-concurrency programming spreads, reactive programming has entered mainstream frameworks. Spring now proposes the R2DBC standard, and the vertx framework includes asynchronous connectors for MySQL, PostgreSQL, etc. On the other hand, if an ORM engine acts as a data fusion access engine, its storage might be async-supported NoSQL sources (Redis, ElasticSearch, MongoDB). ORM also needs to cooperate with a GraphQL async execution engine. Given these, NopOrm’s OrmTemplate adds an asynchronous invocation mode:
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symmetric-ds
SymmetricDS is database replication and file synchronization software that is platform independent, web enabled, and database agnostic. It is designed to make bi-directional data replication fast, easy, and resilient. It scales to a large number of nodes and works in near real-time across WAN and LAN networks.
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tbmq
The ultimate distributed MQTT broker. Handles 100M+ connections and 10M msg/sec with ease. Built on Kafka to provide industrial-grade persistence and eliminate data loss.
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pgjdbc-ng
A new JDBC driver for PostgreSQL aimed at supporting the advanced features of JDBC and Postgres
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Java Postgresql discussion
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A note from our sponsor - SaaSHub
www.saashub.com | 19 Jun 2026
Index
What are some of the best open-source Postgresql projects in Java? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | dbeaver | 50,531 |
| 2 | Chat2DB | 25,764 |
| 3 | shardingsphere | 20,735 |
| 4 | APIJSON | 18,395 |
| 5 | mybatis-plus | 17,394 |
| 6 | QuestDB | 17,062 |
| 7 | Flyway | 9,852 |
| 8 | jOOQ | 6,736 |
| 9 | flink-cdc | 6,432 |
| 10 | JSqlParser | 5,951 |
| 11 | Crate | 4,410 |
| 12 | LakeSoul | 3,239 |
| 13 | Jailer | 3,163 |
| 14 | metasfresh | 2,344 |
| 15 | sqlancer | 1,734 |
| 16 | pgjdbc | 1,719 |
| 17 | mybatis-plus-join | 1,513 |
| 18 | r2dbc-postgresql | 1,089 |
| 19 | qstudio | 1,079 |
| 20 | symmetric-ds | 869 |
| 21 | tbmq | 736 |
| 22 | scalardb | 640 |
| 23 | pgjdbc-ng | 607 |
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