🪢 Open source LLM engineering platform: LLM Observability, metrics, evals, prompt management, playground, datasets. Integrates with OpenTelemetry, Langchain, OpenAI SDK, LiteLLM, and more. 🍊YC W23

📖 Design Patterns implemented in Swift 5.0

Debug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations, and production-ready dashboards.

Audio synthesis, processing, & analysis platform for iOS, macOS and tvOS

The AI framework that adds the engineering to prompt engineering (Python/TS/Ruby/Java/C#/Rust/Go compatible)

📺 Visual Editor & GraphQL IDE.

A component toolkit for creating live-running code editing experiences, using the power of CodeSandbox.

Next-generation AI Agent Optimization Platform: Cozeloop addresses challenges in AI agent development by providing full-lifecycle management capabilities from development, debugging, and evaluation to monitoring.

🧊 Open source LLM observability platform. One line of code to monitor, evaluate, and experiment. YC W23 🍓

A List of Awesome Swift Playgrounds

A cross-platform framework to build native, dynamic and swift user interface - 强大轻巧灵活的客户端动态化解决方案

You know it, you use it, now it's time to improve it. PWD!.

🥄 Develop, test and document your React story components faster.

A blazing fast & offline frontend playground

Better playgrounds that work both for Objective-C and Swift

A PostgresQL server running in your browser

RunJS is a JavaScript playground for macOS, Windows and Linux. Write code with instant feedback and access to Node.js and browser APIs.

A cross-platform C# editor and playground.

Interactive code examples

💎 The Principles of OOD (SOLID) based on Uncle Bob articles.