CrewAI
An open-source framework and enterprise platform for teams of role-playing agents.
Best for: Developers, Enterprise teams

LangChain
One of the most widely used frameworks for building LLM apps and agents.
LangChain unifies models, tools, retrieval and memory; LangGraph builds controllable, stateful agents; LangSmith handles tracing, evaluation and deployment.
Recent reliable evidence supports use in Hong Kong.
Basis: official statement
The source code is hosted on GitHub (Hong Kong is not among GitHub's trade-control restricted regions) and can be downloaded and self-hosted for free. Note: if you connect it to model APIs such as OpenAI, Anthropic or the Gemini API, each provider's regional policy still applies.
Verified on: 14 Nov 2026
Availability information is for reference only and is not legal advice. Terms can change at any time — rely on the provider's latest official statement. We do not provide ways to bypass regional restrictions.
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