UniMachines is an online marketplace for used industrial machinery, bringing together equipment listings across a wide range of manufacturing and workshop categories. Its platform helps buyers browse machines by type, manufacturer, and other listing details, while sellers can publish advertisements for free. Users can create an account or log in to manage their activity, and the site supports multiple currencies, measurement systems, and country selections for an international audience.

The machinery catalog includes CNC milling machines and machining centers, CNC lathes and turning centers, conventional lathes and milling machines, presses, forging hammers, drilling and boring machines, grinders, saws, and bending equipment. It also features laser, plasma, gas, waterjet, and electrical-discharge machining systems, as well as injection molding machines, industrial robots, compressors, welding equipment, forklifts, furnaces, and laboratory instruments. Listings are associated with a broad range of manufacturers, including AMADA, ABB, Bridgeport, Bystronic, and Chiron. UniMachines serves as a searchable resource for people and businesses looking to buy or advertise pre-owned production machinery.