TexTab is a macOS application designed to enhance productivity by integrating AI capabilities directly into the user's workflow through customizable keyboard shortcuts. It enables users to perform various AI-powered tasks instantly without switching between applications.

The application allows users to create unlimited AI actions and assign each one a unique keyboard shortcut. It works everywhere on macOS, letting users select text in browsers, emails, IDEs, and documents to run AI actions. TexTab supports multiple AI providers including OpenAI, Anthropic, Groq, Perplexity, and OpenRouter, allowing users to switch providers and choose preferred models. Users bring their own API keys, connecting directly to AI providers without subscriptions or middlemen. The app includes a one-click AI-powered prompt improver to enhance simple instructions into better-structured prompts. Native plugins extend functionality with features like Chat with AI, QR Code Generator, Image Converter, and Color Picker. Additional features include direct AI conversations in popup windows with multi-turn streaming responses, web search using Perplexity for live data queries, and pre-built actions for common tasks.

TexTab operates by allowing users to create custom keyboard shortcuts that trigger AI actions on selected text across macOS applications. The unique approach involves direct integration with the operating system to provide instant access to AI capabilities without interrupting workflow.

The benefits include increased productivity through rapid AI task execution, flexibility in choosing AI providers and models, and enhanced prompt quality through automated improvement. Use cases include fixing grammar, rephrasing text, shortening content, formalizing language, translating text, and performing web searches with formatted results.

Target users include macOS users seeking productivity enhancements through AI integration. The application requires macOS 14+ and operates locally on the user's Mac with data staying on-device. API calls go directly to providers without TexTab servers intermediating. An iPhone app is mentioned as coming soon.