Kompozer is a PC component discovery and configuration platform that helps users choose parts, compare options, and plan a computer build. Its free tools are designed to make hardware selection more accessible, with compatibility guidance and comparisons that highlight differences in performance, price, and fit. Users can browse components by category, including processors, graphics cards, motherboards, memory, power supplies, storage, cases, cooling products, and peripherals. The site also offers a PC builder, a component comparator, a power supply calculator, and compatibility tools for checking whether a PC can run particular software and whether NVMe or SSD storage is suitable.

Kompozer features popular products with listed prices and availability, and directs shoppers to its current merchant, Amazon. Users can share their configurations after signing up, set personalized price alerts, and follow or favorite components to keep track of products and new releases. The platform also publishes hardware-related news and provides information through its blog and support pages. Kompozer presents itself as a free resource for comparing, configuring, and finding PC components.