OpenCat - AI Chat, Agent, MCP

Early Moon, LLC · Productivity
OpenCat is the leading native macOS, iPhone, and iPad AI client for power users who prefer bring-your-own-key workflows. Connect API keys for OpenAI, Anthropic, Google, and other providers, and chat with frontier models without paying for a chat subscription on top of API costs. Native menu-bar access, instant prompts, file analysis, image generation, agent tasks, and MCP server support make it feel like a true Mac app. Sync conversations across devices via iCloud, customize prompts, and pin favorite assistants. A one-time purchase or modest subscription unlocks pro features — popular with developers and AI enthusiasts.$7b