TextCraft

TextCraft is an open source add in for Microsoft Word that brings AI writing tools into the document window. It is released under the MIT license and aims to work as a privacy focused alternative to Microsoft Copilot, running on local models so that documents can stay on the user's own machine. The Generate feature opens a task pane where the user types a prompt. The model replies using the contents of the open Word document and any available retrieval context, and the markdown response is converted into native Word formatting. Further writing tools cover rewriting, proofreading and review, and AI mentions can be used inside comments. The system prompt behind each feature can be customized through user environment variables. TextCraft connects to any OpenAI compatible API endpoint. OpenAI and Ollama are listed as fully supported, and other providers such as vLLM are generally supported. By default it points at a local Ollama server, and the README walks through pulling a language model and an embedding model. It requires Windows 10 version 20H2 or later and Microsoft Office 2010 or later, with 32 bit and 64 bit installers provided. The interface follows Office display languages. The software is free to download and use. Costs depend only on the model provider chosen, and running a local model through Ollama has no per use charge.