TexTab is a macOS productivity application that lets users turn any AI-driven task into an instant keyboard shortcut, enabling powerful text processing and automation without switching apps. It operates at the system level, so you can select text in any macOS application, browsers, email clients, code editors, documents, and trigger AI actions with a single keystroke, turning tasks like translation, summarization, rewriting, or formalizing into one-press commands. Users can create unlimited custom AI actions with unique shortcuts and connect to multiple AI providers (such as OpenAI, Anthropic, Groq, Perplexity, or OpenRouter) using their own API keys, so the data stays private and costs are controlled; API calls go directly to the provider with no TexTab servers in between. It also includes features like a one-click AI prompt enhancer, native plugins such as a pop-up AI chat, QR code generator, image converter, and color picker.