IronCalc is an open-source spreadsheet engine that is MIT/Apache 2.0 licensed, allowing for integration, customization, and sharing without restrictions. It is feature-rich, Excel compatible, fully tested, fast, lightweight, international, and well designed. The mission is to provide a reliable and high-quality spreadsheet engine that caters to diverse needs, addressing unmet needs in the industry and empowering SaaS developers. IronCalc also focuses on automated spreadsheet processing, global collaboration, and interactive blog integration. Beyond code, IronCalc aims to advance spreadsheet technology and community through research, development, community collaboration, and building a knowledge base for future advancements.
https://www.ironcalc.com/