Wire is a secure collaboration platform that supports instant messaging, file sharing, voice calls, and video conferences. Users can switch among Wire's different communication modes (IM to video conference, for example) with a single click, without needing to change programs. Wire supports "encrypted guest rooms" for communication with external clients and partners. Guests are sent an invitation link which they can click to join the chat from their browser with no requirement to register or download anything. The Wire site shows an example where this feature is used for an electronic interview. Source code for both the Wire server and clients are available on GitHub. Wire's open approach to security has enabled a number of independent third-party audits of their code, with improvements resulting from those audits integrated into the software. Wire can be accessed over the web using any modern browser, with a desktop application for Windows, macOS, or Linux, and with mobile clients for iOS and Android. Wire is free for personal use and available for business use for a monthly fee, with discounts available for non-profit and educational institutions.