1.ClickHouse / ClickHouse
ClickHouse® is a real-time analytics database management system
Ranked by Attention Score: stars gained over the last 90 complete days
1–100 of 379 by Attention Score · Aug 6, 2026 – Nov 3, 2026 (UTC)
ClickHouse® is a real-time analytics database management system
Qdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the next generation of AI. Also available in the cloud https://cloud.qdrant.io/
The Prometheus monitoring system and time series database.
PostgreSQL backup tool with Point-In-Time-Recovery and restore verification
LMCache: Supercharge Your LLM with the Fastest KV Cache Layer
Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search
Free universal database tool and SQL client
Free implementation of Play Services
A lightweight, lightning-fast, in-process vector database
Developer-friendly OSS embedded retrieval library for multimodal AI. Search More; Manage Less.
Dolt – Git for Data
Search infrastructure for AI
Open-source ETL/ELT you deploy on your own servers or cloud. Built on DuckDB: no-code/low-code visual pipelines or SQL, 385 components, dbt, CDC, data quality, reverse ETL, lineage, MCP for AI agents. No vendor cloud, no per-row billing.
Neon: Serverless Postgres. We separated storage and compute to offer autoscaling, code-like database branching, and scale to zero.
VictoriaMetrics: fast, cost-effective monitoring solution and time series database
Embeddable Postgres with real-time, reactive bindings.
🔎 Open source distributed and RESTful search engine.
Apache Doris is a real-time analytics and hybrid search database for AI agents.
Distributed reliable key-value store for the most critical data of a distributed system
The Prisma ORM: write your application in TypeScript with human-readable queries instead of SQL. Host your database on Prisma Postgres and your app on Prisma Compute.
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.
Streaming replication for SQLite.
Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)
Official successor to conduwuit
Cloud-native OSS search engine for observability
QuestDB is a high performance, open-source, time-series database
🧰 The Rust SQL Toolkit. An async, pure Rust SQL crate featuring compile-time checked queries without a DSL. Supports PostgreSQL, MySQL, and SQLite.
💡 All-in-one AI framework for semantic search, LLM orchestration and language model workflows
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.
FoundationDB - the open source, distributed, transactional key-value store
Portabase - Database backup & restore tool for PostgreSQL, MySQL, MsSQL, MariaDB, Firebird SQL, SQLite, MongoDB, Redis, Files and Docker Volume
Vitess is a database clustering system for horizontal scaling of MySQL.
Flyway by Redgate • Database Migrations Made Easy.
Docker-based local PHP+Node.js web development environments
Instant is the best backend for AI-coded apps. You get auth, permissions, storage, presence, and streams — everything you need to ship apps your users will love.
Automatically generates beautiful and easy-to-read ER diagrams from your database.
An open source multi-tool for exploring and publishing data
Graph database optimized for fast analysis and real-time data processing. It is provided as an extension to PostgreSQL.
Open-source and local-first Slack and Notion alternative that puts you in control of your data
Declarative schema migrations with schema-as-code workflows
Scalable datastore for metrics, events, and real-time analytics
One advanced and mature open-source MPP (Massively Parallel Processing) database. Open source alternative to Greenplum Database.
Distributed transactional key-value database, originally created to complement TiDB
A Minimalistic Wrapper for IndexedDB
Cloud Database Manager
OceanBase is the unified distributed database for the AI era — open-source, multi-model, one engine for your most demanding workloads.
A distributed, fast open-source graph database featuring horizontal scalability and high availability
The local-first database that runs on every JS runtime and replicates with your existing backend - no vendor, no lock-in - https://rxdb.info/
Build data pipelines with SQL and Python, ingest data from different sources, add quality checks, and build end-to-end flows.
The agent platform built on sync.
Open source transactional distributed database. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure without compromising performance.
Where data access meets operational intelligence
Fast Open-Source Search & Clustering engine × for Vectors & Arbitrary Objects × in C++, C, Python, JavaScript, Rust, Java, Objective-C, Swift, C#, GoLang, and Wolfram 🔍
A Kubernetes operator for declarative database schema management (gitops for database schemas)
Hivemind turns your traces into reusable skills across agents
Highly available Prometheus setup with long term storage capabilities. A CNCF Incubating project.
A safe, extensible ORM and Query Builder for Rust
This Ansible collection provides battle tested hardening for Linux, SSH, nginx, MySQL
A modern text/numeric/geo-spatial/vector indexing library for go
The AI-native database built for LLM applications, providing incredibly fast hybrid search of dense vector, sparse vector, tensor (multi-vector), and full-text.
Redisson: Valkey & Redis Java Client and Real-Time Data Platform. Sync/Async/RxJava/Reactive API. Extends Valkey and Redis with over 60 objects and services: Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Spring, Tomcat, Scheduler, JCache API, Hibernate, RPC, local cache..
A truly Open Source MongoDB alternative
One governed graph for AI agents — GraphQL + MCP over your databases, files, APIs, and code
Apache Kvrocks is a distributed key value NoSQL database that uses RocksDB as storage engine and is compatible with Redis protocol.
Asynchronous Python framework for event-driven services. A thin client for Kafka, RabbitMQ, NATS, Redis and MQTT with full access to native broker features, plus AsyncAPI docs, in-memory tests and observability out of the box.
high-performance graph database for real-time use cases
Fast key-value DB in Go.
Empower your hosting business with FOSSBilling, the free and open-source solution for efficient billing and client management.
Distributed stream processing engine in Rust
Self-hosted monitoring for Docker, Kubernetes and uptime. Single Go binary, no agent config, live alerts. Drop a container, your stack is monitored.
Seamless multi-primary syncing database with an intuitive HTTP/JSON API, designed for reliability
An powerful enhanced toolkit of MyBatis for simplify development
The official home of the Presto distributed SQL query engine for big data
A fast PostgreSQL Database Client Library for Python/asyncio.
Approximate Nearest Neighbors in C++/Python optimized for memory usage and loading/saving to disk
Next-generation full-text search library for Browser and Node.js
PostgreSQL zero-downtime migrations made easy
chDB is an in-process OLAP SQL Engine 🚀 powered by ClickHouse
A PostgreSQL metric exporter for Prometheus
Type safe SQL builder with code generation and automatic query result data mapping
Production-ready C++ Asynchronous Framework with rich functionality
Database anonymization and test data management
A graph database that supports more than 100+ billion data, high performance and scalability (Include OLTP Engine & REST-API & Backends)
A Model Context Protocol server to connect to MongoDB databases and MongoDB Atlas Clusters.
Apache DataFusion Ballista Distributed Query Engine
Fast and exact implementation of the C++ from_chars functions for number types: 4x to 10x faster than strtod, part of GCC 12, MySQL, DuckDB, Chromium, Redis and WebKit/Safari
Deeplake is AI Data Runtime for Agents. It provides serverless postgres with a multimodal datalake, enabling scalable retrieval and training.
Database Markup Language (DBML), designed to define and document database structures
The open source Meme Search Engine and Finder. Free and built to self-host locally with Python, Ruby, and Docker.
💎 Robust job processing in Elixir, backed by modern PostgreSQL, SQLite3, and MySQL
Native PostgreSQL driver for the Rust programming language
Official library for RaBitQ vector quantization and approximate nearest-neighbor search, in C++ and Python.
:kangaroo: - PouchDB is a pocket-sized database.