Mem0
Universal memory layer for AI agents — multi-signal retrieval, temporal reasoning, 57k+ GitHub stars
Give your AI apps persistent memory and intelligence
Milvus
High-performance vector database — billion-scale AI similarity search.
Apache-2.0 alternative to Pinecone with HNSW/IVF/DiskANN indexing, GPU acceleration, and distributed architecture. Lite mode for development.
Qdrant
High-performance vector database — semantic search at scale.
Apache-2.0 alternative to Pinecone with HNSW indexing, payload filtering, and distributed deployment. Rust engine with REST/gRPC APIs.
Chroma
Rust-based vector database for AI — serverless cloud with hybrid and full-text search for embeddings, metadata, and RAG
Open-source vector database for AI search and retrieval
Supermemory
Memory layer for AI agents — hybrid vector search, ontology-aware graph, and sub-100ms retrieval
Lightning-fast memory API for AI applications
Weaviate
AI-native vector database with semantic search, RAG, and hybrid search for building AI agents and applications
AI-native vector database for intuitive applications