Kerlig is a native AI writing efficiency tool designed for macOS. By deeply integrating into your existing workflow, it offers intelligent writing, document interaction, multi-model support, and real-time proofreading, aiming to dramatically improve the productivity of written communication.
Kerlig uses a one-time purchase licensing model, with prices typically ranging from USD 27 to 49, and a trial version available for users to try. After purchase, you get full features with no ongoing subscription.
Kerlig integrates multiple mainstream AI models, including OpenAI, Anthropic Claude, Google Gemini, Perplexity, and DeepSeek, and allows users to customize model names to fit different writing needs.
Kerlig places a strong emphasis on privacy. By default, it processes content locally and only transmits the necessary data if you actively opt to use cloud-based AI models. It also supports fully offline local-model operation.
Kerlig is mainly aimed at professionals who frequently need cross-application written communication, such as designers, product managers, marketers, content creators, and remote team members.
Kerlig is deeply integrated with macOS and works directly in major browsers such as Safari, Chrome, Edge, Brave, Arc, as well as in many productivity and creative apps like Mail, Slack, Jira, and Figma.
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