A light-weight Svelte web client for OpenAI-compatible chat APIs, using your own API key, with local chat history and shareable chats.
#chatgpt-api
Best open-source ChatGPT API clients and tools (2026)
These projects let you call OpenAI-style chat APIs from code, the command line or a browser. Pick by language and platform: go-openai is a zero-dependency Go client, SwiftOpenAI covers Apple platforms and Linux, and CodeGPT is a Go CLI that drafts git commit messages and brief code reviews. ChuanhuChatGPT is a fuller web GUI under GPL-3.0, so its copyleft terms matter if you plan to redistribute changes.
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A Swift package for calling OpenAI's public API across Apple platforms and Linux, with support for many OpenAI-compatible providers.
A Go CLI that generates git commit messages and brief code reviews with LLMs, and can install a prepare-commit-msg git hook.
An unofficial, zero-dependency Go client for the OpenAI API, covering Responses, Chat Completions, images, audio and more.
A lightweight web GUI for ChatGPT and many other LLMs, with file-based Q&A, web search, local model deployment and an agent assistant.