Chat2DB is a free, cross-platform, local-first database client and SQL workspace for developers, DBAs, analysts, and data teams. Connect to 40+ databases, manage data, edit and run SQL, and use your own AI model to generate, explain, and optimize queries. Available on desktop, web, Docker, and CLI, with MCP support.
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A high performance caching library for Java
QuestDB is a high performance, open-source, time-series database
- time-series
- low-latency
- database
- sql
Apache Druid: a high performance real-time analytics database.
- druid
Apache ZooKeeper
- zookeeper
- database
- hacktoberfest
- java
The world's fastest open query engine for sub-second analytics both on and off the data lakehouse. With the flexibility to support nearly any scenario, StarRocks provides best-in-class performance for multi-dimensional analytics, real-time analytics, and ad-hoc queries. A Linux Foundation project.
Flyway by Redgate • Database Migrations Made Easy.
- flyway
- java
- database-migrations
- java-library
Open source transactional distributed database. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure without compromising performance.
Main Liquibase Source
- java
- liquibase
- database-migrations
- java-library
Apache Ignite
- distributed-sql-database
- iot
- osgi
- network-client
OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text and Geospatial models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID Transactions, Full-Text indexing and Reactive Queries.
- orientdb
- graph-database
- document-database
- dbms
Apache Linkis builds a computation middleware layer to facilitate connection, governance and orchestration between the upper applications and the underlying data engines.
A graph database that supports more than 100+ billion data, high performance and scalability (Include OLTP Engine & REST-API & Backends)
- database
- graph-database
- graph
- gremlin
Replicate your Key Value Store across your network, with consistency, persistance and performance.
FlexyPool adds metrics and failover strategies to a given Connection Pool, allowing it to resize on demand.
- connection-pool
- java
- histogram
- dbcp
Open-source, self-hosted enterprise & site search server built on OpenSearch. Crawls web / file / DB / cloud sources, 20+ languages, REST API, and AI/RAG & semantic search. Apache-2.0.
- java
- elasticsearch
- full-text-search
- lucene
High performance reactive SQL client written in Java
TranslatedUniversal, flexible, high-performance distributed ID generator.
- distributed
- id
- idgenerator
- snowflake
A fully asynchronous, non-blocking, thread-safe, high-performance HBase client.
OME (Open Microscopy Environment) develops open-source software and data format standards for the storage and manipulation of biological light microscopy data. A joint project between universities, research establishments and industry in Europe and the USA, OME has over 20 active researchers with strong links to the microscopy community. Funded by private and public research grants, OME has been a major force on the international microscopy stage since 2000.
- omero
- java
- python
- server
Redis client for Vert.x
JMeter plugin that lets you send sample results to an ElasticSearch engine to enable live monitoring of load tests.
- jmeter
- plugin
- jmeter-plugin
- elasticsearch
Command line util for export oracle schema to set of ddl scripts
- export-oracle-schema
- ddl
- oracle-db
- oracle
High performance reactive PostgreSQL client written in Java