Circular Library Network provides sustainable hardware and a community platform to facilitate the sharing economy. Their innovative self-checkout library systems make it easy for people to borrow and return tools and other items without staff assistance. This reduces administrative costs, prevents wasteful consumption, and helps build thriving communities. The modular cabinet system is designed to be simple, user-friendly, affordable, reliable, and customizable. Circular Library Network supplies the electronic hardware and works with customers to source other materials locally. Repurposing existing furniture is encouraged. Profits are used to offer discounted or donated systems to underserved communities. Circular Library Network connects participating communities and enables them to share information, learn from each other, and grow. The team uses geothermal heat and electricity, tracks and validates sustainability metrics through Impact Forecast, and actively supports Hringrásarsetur Íslands, a not-for-profit organization working for the circular economy and the right to repair movement.