O Ollama · Local LLM inference & serving
In-depth entry Open-source runtime and model manager for running open-weight LLMs locally on macOS, Windows and Linux, with a REST API, OpenAI- and Anthropic-compatible endpoints and optional cloud models
MIT Open source Free Local Self-hosted Nov 2, 2026P Andrew Kane (pgvector project) · Vector databases
In-depth entry PostgreSQL extension adding vector types, distance operators and HNSW/IVFFlat indexes for similarity search inside the database
PostgreSQL Open source Free Self-hosted Nov 2, 2026Q Qdrant Solutions GmbH · Vector databases
In-depth entry Open-source vector search engine written in Rust with filterable HNSW indexes, sparse and multi-vector support, REST/gRPC APIs and a managed cloud
Apache-2.0 Open source Freemium Local Self-hosted Nov 2, 2026