About Docs Blog Contact

Try now

IronCalc is developed in the open: this is work in progress, we are aiming for a release on Oct 30. Feel free to look around but things might be broken.

The democratization
of spreadsheets

Empowering Everyone with Advanced, Open-Source Spreadsheet Solutions

Screenshot of IronCalc Spreadsheet

IronCalc is a
spreadsheet engine
and
ecosystem

MIT/Apache 2.0 licensed

You can integrate it into your projects, customize it to your needs, and share it openly without any restrictions.

Feature rich

You shouldn’t worry that this or that function is not supported.

Excel compatible

We at IronCalc are in awe of the software created by Microsoft over the years. We want every one to be able to use their spreadsheets.

Fully tested

Modern programming practices should be used covering with tests any feature of the system.

Fast and lightweight

The programs shouldn’t be heavier than a few hundred kilobytes.

International from day one

Language should no be a barrier to use a spreadsheet.

Well designed

It should be nice and friendly to use. Designed with love from the ground up.

Why
IronCalc?

For over 40 years, spreadsheets have been integral to countless applications. Despite numerous proprietary and open-source options, finding a universally accessible, reliable, and high-quality engine remains a challenge. Many existing solutions are expensive, require accounts, or suffer from performance and stability issues.

Our Mission: To fill the gaps left by the industry and empower every user with a robust, open-source spreadsheet engine that caters to diverse needs. Here's why we are dedicated to this mission:

Addressing Unmet Needs

Empowering SaaS Developers: Hundreds, if not thousands, of companies have implemented half-baked spreadsheets in their systems. IronCalc aims to provide these businesses with a superior, open-source alternative that enhances their SaaS applications.

Automated Spreadsheet Processing: Users need a reliable way to programmatically open, populate, and analyze spreadsheets for large-scale scenarios. IronCalc delivers the performance and functionality required for these complex tasks.

Global Collaboration: We envision a world where anyone can use a spreadsheet online and effortlessly share it with friends for collaborative projects, such as planning travel experiences.

Interactive Blog Integration: Bloggers should be able to embed interactive spreadsheets in their posts, allowing readers to engage with custom test cases and scenarios.

Beyond Code: Advancing Spreadsheet Technology

IronCalc's ambition extends beyond providing open-source code. We aim to drive the spreadsheet industry forward through:

Research and Development: While many areas of computer science, such as compilers and algorithms, have extensive literature, spreadsheets have been largely overlooked. We are committed to writing papers on algorithms and evaluation strategies, contributing to academic and practical knowledge.

Community and Collaboration: By organizing conferences and supporting PhD researchers, we foster a collaborative environment where ideas and innovations can flourish.

Building a Knowledge Base: Our goal is to equip the next generation of spreadsheet developers with a comprehensive set of tools and knowledge, laying a solid foundation for future advancements.

Together, we can push the boundaries of what spreadsheets can achieve, making high-quality, accessible spreadsheet technology available to all.

– The IronCalc Team

Funding

This project is funded through the NGI0 Entrust Fund, a fund established by NLnet with financial support from the European Commission's Next Generation Internet program, under the aegis of DG Communications Networks, Content and Technology under grant agreement No 101092990. Learn more on the project page.

Sponsors

We are grateful for the support received by the following organizations:

Tuta is the world's most secure email service, easy to use and private by design.

Zulip is an open-source modern team chat app designed to keep both live and asynchronous conversations organized.