langchain4j / langchain4j
LangChain4j is an idiomatic, open-source Java library for building LLM-powered applications on the JVM. It offers a unified API over popular LLM providers and vector stores, and makes implementing tool calling (including MCP support), agents and RAG easy. It integrates seamlessly with enterprise Java frameworks like Quarkus and Spring Boot.
apache / doris
Apache Doris is a real-time analytics and hybrid search database for AI agents.
StarRocks / starrocks
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.
ArcadeData / arcadedb
ArcadeDB Multi-Model Database, one DBMS that supports SQL, Cypher, Gremlin, HTTP/JSON, MongoDB and Redis. ArcadeDB is a conceptual fork of OrientDB, the first Multi-Model DBMS. ArcadeDB supports Vector Embeddings.
Snailclimb / interview-guide
基于 Spring Boot 4.1、Java 25、Spring AI 2.0、React、PostgreSQL/pgvector、Redis 和 RustFS 构建的开源 AI 面试平台，支持简历智能分析、模拟面试、语音面试和知识库 RAG。
vespa-engine / vespa
The AI search platform
objectbox / objectbox-java
Database for Android and JVM - first and fast, lightweight on-device vector database
crate / 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.
locationtech / jts
The JTS Topology Suite is a Java library for creating and manipulating vector geometry.
onthegomap / planetiler
Flexible tool to build planet-scale vector tilesets from OpenStreetMap data fast
datastax / jvector
JVector: the most advanced embedded vector search engine
dingodb / dingo
A multi-modal vector database that supports upserts and vector queries using unified SQL (MySQL-Compatible) on structured and unstructured data, while meeting the requirements of high concurrency and ultra-low latency.
Arcticons-Team / Arcticons
A monotone line-based icon pack for android
mapsforge / mapsforge
Vector map library and writer - running on Android and Desktop.
infinispan / infinispan
Infinispan is an open source data grid platform and highly scalable NoSQL cloud data store.
JOML-CI / JOML
A Java math library for OpenGL rendering calculations
OtterMind / Nubase
🔥🔥🔥 Turn AI-written code into real apps. Nubase is an open-source, AI-native backend platform for AI Coding, agentic applications, and modern product teams: Memory, Database, Storage, and Auth in one self-hostable service.
ronitgupta138 / Vectra-Core
⚡ In-Memory Vector Search Engine & HNSW ANN Graph in Java 21 Loom. Sub-millisecond KNN retrieval, 8-bit scalar quantization (SQ8), 16,000+ QPS.
DeepSQLAI / deepsql
The database agent for Postgres and MySQL - Point it at PostgreSQL or MySQL and ask questions in plain English — schema exploration, query generation, slow query analysis, index recommendations, generated dashboards. Self-hosted and air-gapped.
git-syl / hermes-agent-demo
A multi-model Agent runtime built on Spring Boot 4 / Spring AI 2.0: model routing (Anthropic / DeepSeek / OpenAI / custom), thinking toggle, Task subagents, hot-pluggable Skills, Docker sandbox + Code Interpreter, MCP tools, dify/n8n integration, RAG with pgvector, Human-in-the-Loop approvals — all streamed as structured SSE events.
metacoglabs / hypergraph
A persistent native vector-hypergraph database for higher-order interactions