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OpenAlternative

Fullmoon

A mobile app for interacting with private, local large language models that work offline and are optimized for Apple silicon.

Screenshot of Fullmoon

A mobile app for interacting with private, local large language models that work offline and are optimized for Apple silicon.

It is positioned as an open-source alternative to Claude, Grok, Perplexity, ChatGPT.

Primary category: AI Chat Interfaces.

Detected stack: Swift.

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What is Fullmoon?

Fullmoon is an open source project listed in the OpenAlternative directory. It is useful for teams comparing software options, evaluating self-hosted tools, and replacing proprietary services with transparent alternatives.

Alternative use case

Fullmoon can be considered when you are looking for open source alternatives to tools such as ChatGPT, Claude, Grok, Perplexity.

Technology stack

Fullmoon is associated with technologies including Swift, which can help developers understand how it fits into an existing engineering stack.

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