Machine Freak is an online marketplace for finding and comparing used machine tools and industrial equipment from inventories across Japan. The site lists more than 72,000 items, covering machining centers, milling machines, lathes, grinders, presses, sheet-metal machinery, and many other categories. Buyers can browse detailed equipment groupings, from CNC and conventional machines to measuring instruments, welding equipment, robots, material-handling systems, tools, workholding, motors, machine components, and software.

Beyond search, Machine Freak supports the process of buying and selling used machinery. Users can register, list machines for sale, request valuations, and contact sellers through the platform. It also offers transport arrangements, helping users coordinate machinery shipping. The website provides information about participating businesses, guidance on how to use the service, events, and a blog. Available in Japanese and English, Machine Freak brings a broad selection of used industrial machinery and related equipment together in one searchable marketplace for businesses seeking equipment or looking to sell and move it.