Show HN: I built a desktop app to prompt multiple LLM web interfaces at once (github.com)

A developer released an open-source Windows desktop app (Electron + TypeScript) that lets you send a single prompt simultaneously to multiple LLM web interfaces — e.g., ChatGPT, Google Gemini, Anthropic Claude, X.ai Grok, DeepSeek and Copilot — saving the repetitive copy/paste work of querying each model in separate tabs. The app broadcasts prompts with Ctrl+Enter, can close with Ctrl+W, and uses a bottom-right dropdown to add/remove consoles (ChatGPT, Gemini and Llama are bundled by default). It’s available from the GitHub repo (github.com/czhou578/llm-god) and distributed as a Setup.exe; note the installer isn’t code-signed so Windows will flag it as untrusted (the author encourages code review before trusting the binary). Technically it’s an Electron app you run via npm (npm install; npm run start) and build with npm run make to create /out/app-win32-x64. Development tips include running npx tsc --watch and electronmon for hot reload and using optional devtools. Recent changes: migrated to TypeScript, added/removed integrations (LMArena added then removed; Copilot added), and introduced saved custom prompts and improved JS injection logic. Significance: it’s a productivity tool for prompt engineering, rapid model comparison and ensemble testing across major provider consoles, but users must still respect provider rate/usage limits and exercise caution with unsigned binaries. Contributions and PRs are welcome.