LangSmith
Langfuse
Helicone AI
LangChain
Portkey
Humanloop
Braintrust
Braintrust.dev
Knowns CLI
Claude Code
Atlas-OS.dev
opencode
Codexโโ
VS Code
Kodingo
ClackyAI
LangSmith
Knowns CLILangSmith is recommended for AI developers, machine learning engineers, and businesses aiming to build, test, and optimize applications based on language models. It is particularly useful for teams that require robust evaluation tools and a streamlined process for managing and deploying language-driven applications.
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Langfuse - Langfuse is an open-source LLM engineering platform that helps teams collaboratively debug, analyze, and iterate on their LLM applications.
Claude Code - Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebaseโno more context switching, just breakthrough results.
Helicone AI - Open-source LLM Observability for Developers
Atlas-OS.dev - A Claude Code alternative. Open source (MIT), multi-agent, hook-driven, model-agnostic coding CLI with a built-in PRD-to-release pipeline.
LangChain - Framework for building applications with LLMs through composability
opencode - The AI coding agent, built for the terminal.