Druide creates and markets advanced English and French writing tools. Its flagship product is Antidote, which offers a grammar and style checker, a set of ten dictionaries and ten linguistic guides. Antidote runs on Windows, Mac OS, Linux and the Web, and its tools are integrated directly in popular word processing and email tools. A version for Apple’s iPhone is available as well. Druide also offers the WebElixir service, which monitors the quality of websites.