PaletteBrain

PaletteBrain is a macOS desktop app for Mac productivity users, writers, and developers who want ChatGPT-style help inside any app without switching windows or copy-pasting.

Key capabilities include:

• Global command palette: select text in any macOS app or website (for example Notion, Google Docs, Slack, Discord, Gmail), press ⌥ Space to open commands, then paste the last reply back with a shortcut.
• Custom AI commands (prompt templates): create reusable commands for tasks like rewriting, grammar fixes, translation, summarization, and coding, then bind them to keyboard shortcuts.
• Bring-your-own API keys: connect directly to OpenAI or Azure OpenAI models with user-provided keys; usage is billed pay-per-use by the provider (no middleman).
• Local conversation management: keeps chat history on-device to revisit and continue conversations.

Pricing: Paid (one-time purchase) with lifetime access. Personal license $29 once (1 Mac), Family license $99 once (5 Macs), Team/Enterprise custom. An OpenAI API key is required for usage costs.

Notable for combining a system-wide shortcut, template-based commands, and direct OpenAI/Azure key support, positioning it as an alternative to multiple subscription tools used for writing assistance, translation, and ChatGPT access on macOS.