EinoExt hosts official component implementations for the Eino LLM application framework, including chat models (OpenAI, Claude, Gemini, Ollama), tools (Google Search, Duck Duck Go), retrievers and indexers (Elastic Search, Volc VikingDB), and embeddings (OpenAI, Ark). It also provides callback handlers for observability (Langfuse tracing) and IDE plugins for visualized debugging and graph-based development.