Cursor Rules
Project-level rules files that customize Cursor’s AI behavior per repo. The pattern that spawned an ecosystem.
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Awesome Cursor Rules
Curated GitHub repo of Cursor rules for every framework — Next.js, Python, Rails, you name it.
Continue
Continue is the open-source AI code assistant for VS Code and JetBrains — bring your own model, full customization.
LangChain
LangChain is the framework that started the LLM app movement — chains, agents, RAG, integrations galore.
LlamaIndex
LlamaIndex is the data framework for LLM applications — RAG, ingestion, indexing, query orchestration.
LiteLLM
LiteLLM is the open-source proxy to call 100+ LLM providers with one OpenAI-compatible API. Production-grade.
Instructor
Instructor is the Python library for structured LLM outputs — Pydantic models, retries, type safety.
PromptLayer
PromptLayer is the prompt engineering platform — version, test, monitor, and analyze prompts in production.
Ollama
Ollama is the easiest way to run LLMs locally — one-command install, models from Llama to DeepSeek.
LM Studio
LM Studio is the desktop app for running local LLMs with a nice UI — discover, download, chat with any…