TexTab is a macOS application designed to enhance productivity by allowing users to create custom AI actions that can be triggered instantly using keyboard shortcuts. The main purpose is to provide quick access to AI capabilities directly from any application on macOS, eliminating the need to switch between apps or copy-paste content.

Key features include the ability to create unlimited AI actions with unique keyboard shortcuts, support for multiple AI providers including OpenAI, Anthropic, Groq, Perplexity, and OpenRouter, and a bring-your-own-API-key model that connects directly to providers without intermediaries. The application includes prompt enhancement tools, native plugins like Chat with AI and QR Code Generator, web search functionality using Perplexity, and pre-built actions for tasks such as fixing grammar, rephrasing, shortening, formalizing, and translating text.

TexTab works by allowing users to select text in any macOS application and run their custom AI actions with a single keyboard shortcut. The application operates locally on the Mac, ensuring that data remains private and API calls go directly to the chosen providers without passing through TexTab servers.

Benefits include increased productivity through instant AI access, flexibility in choosing AI models and providers, and enhanced privacy with local data storage. Use cases span across writing assistance, content summarization, translation, grammar correction, and quick information retrieval via web search.

The target users are macOS users seeking to integrate AI capabilities seamlessly into their workflow, particularly those who frequently use applications like browsers, emails, IDEs, and documents. The application is currently in beta with an iPhone app announced as coming soon, and it requires macOS 14 or later.