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Free universal database tool and SQL client

Apache Spark - A unified analytics engine for large-scale data processing

TiDB is built for agentic workloads that grow unpredictably, with ACID guarantees and native support for transactions, analytics, and vector search. No data silos. No noisy neighbors. No infrastructure ceiling.

DuckDB is an analytical in-process SQL database management system

The flexible backend for all your projects 🐰 Turn your DB into a headless CMS, admin panels, or apps with a custom UI, instant APIs, auth & more.

ORM

A scalable, distributed, collaborative, document-graph database, for the realtime web

CockroachDB — the cloud native, distributed SQL database designed for high availability, effortless scale, and control over data placement.

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.

REST API for any Postgres database

Apache Flink

High-performance, scalable time-series database designed for Industrial IoT (IIoT) scenarios

🤖 Chat with your SQL database 📊. Accurate Text-to-SQL Generation via LLMs using Agentic Retrieval 🔄.

Chat with your database or your datalake (SQL, CSV, parquet). PandasAI makes data analysis conversational using LLMs and RAG.

SQL powered operating system instrumentation, monitoring, and analytics.

A time-series database for high-performance real-time analytics packaged as a Postgres extension

Modern and easy to use SQL client for MySQL, Postgres, SQLite, SQL Server, and more. Linux, MacOS, and Windows.

Database diagrams editor that allows you to visualize and design your DB with a single query.

A reactive notebook for Python — run reproducible experiments, query with SQL, execute as a script, deploy as an app, and version with git. Stored as pure Python. All in a modern, AI-native editor.

📊 Cube Core is open-source semantic layer for AI, BI and embedded analytics

A query builder for PostgreSQL, MySQL, CockroachDB, SQL Server, SQLite3 and Oracle, designed to be flexible, portable, and fun to use.

Bitwarden infrastructure/backend (API, database, Docker, etc).

SQL databases in Python, designed for simplicity, compatibility, and robustness.

The lightweight, fault-tolerant database built on SQLite. Designed to keep your data highly available with minimal effort.

GenBI (Generative BI) for AI agents, an open-source, governed text-to-SQL through an open context layer that turns natural-language questions into trusted dashboards, charts, and SQL across 20+ data sources, such as BigQuery, Snowflake, PostgreSQL, ClickHouse, Amazon Redshift, Databricks and more.

QuestDB is a high performance, open-source, time-series database

A type-safe TypeScript SQL query builder

The Database Toolkit for Python

Open-source search database for full-text, vector, and hybrid search with real-time indexing and SQL.