Kerlig is an in-context AI writing assistant designed for macOS, offering features like auto-correction, grammar assistance, and typo prevention. This tool seamlessly integrates into any application on macOS, allowing users to write replies on platforms such as Slack and Mail while maintaining their unique tone of voice. Kerlig excels at summarizing websites, articles, and even chatting with PDFs and documents. It supports various AI models like OpenAI, Anthropic Claude, Google Gemini, and more, enhancing its capabilities across different tasks.

With Kerlig, users can improve their writing tasks, translate content into any language, and even engage in conversation-like interactions. The tool supports large documents up to 350 pages, making it a versatile and efficient writing companion trusted by users globally. While Kerlig offers a range of benefits such as real-time assistance and tailored functionality, it is limited to macOS and requires API keys for certain features.