Monica

Monica is an all-in-one AI assistant, built by Butterfly Effect Pte. Ltd., available as a browser extension, desktop app, and mobile app. It gives one-click access to multiple underlying AI models for chat, writing, translation, image and video generation, and coding help, plus a browser sidebar and smart toolbar for explaining, translating, or summarizing selected text directly on any webpage. Additional features include web-enhanced search, YouTube video summarization, Gmail analysis, PDF tools (including document Q&A), and a bot-building platform for creating custom assistants. It's aimed at general professional users — entrepreneurs, analysts, researchers, developers, marketers, and customer service teams. Monica is free to start with a daily usage limit, with a paid upgrade required for advanced features and higher limits.