Best Developer Tools Tools

Langfuse is an open-source LLM engineering platform for observability, testing, and prompt management. Debug production AI issues, evaluate…

Helicone provides one-line LLM observability — add a single line to your OpenAI calls and get full logging,…

Opik by Comet is an open-source LLM evaluation framework for testing AI application quality at scale. Automated evaluation…

Braintrust is an enterprise AI evaluation platform for measuring, improving, and shipping AI applications. Logging, evaluation datasets, prompt…

Phoenix by Arize is an open-source AI observability library for ML engineers. Traces LLM and embedding applications, visualizes…

TruLens is an open-source framework for evaluating and tracking LLM applications. Feedback functions assess truthfulness, harmlessness, and helpfulness…

Weaviate is an open-source vector database with built-in ML model integration. Automatically vectorizes data as it's imported and…

Qdrant is a high-performance vector database optimized for production AI applications. Rust-based engine delivers exceptional speed with filtering…

Chroma is the open-source embedding database for AI applications. Simple Python API, local-first development, and seamless LangChain integration…

Milvus is a cloud-native vector database built for billion-scale AI applications. Handles trillion-dimensional vectors with hybrid search combining…

LlamaIndex is a data framework for building LLM-powered applications over your data. Simple connectors for 160+ data sources,…

DSPy is a framework for algorithmically optimizing LLM prompts and weights. Instead of manually writing prompts, DSPy compiles…