Git Open Source FastHenry2 repository

Open Source

All our software is open source, with very permissive licenses (MIT or LGPL). A high quality, free alternative to high-priced Electromagnetic softwares, while still having the option of reliable support, customization and training services.

See more »

Comb capacitor over a plane

Electromagnetic Solutions

FastFieldSolvers provides ElectroMagnetic solutions: full consulting services with turnkey studies. Saving investments on non-core activities, you can trust us to perform reliabile simulations for you.

View more »

Google scholar results for FastCap search

Cited by Thousands

Literally thousand of papers cite FastCap, FastHenry, FasterCap and FastFieldsolvers. Simply write any of these keywords in Google Scholar and verify the result!

Hear more»


A Different Business Model. Free.

Our business model is based on a high quality services offer. Everything else is free.

FastFieldSolvers provides ElectroMagnetic solutions. And as we believe in free, open source software, we made the code base of all our premium Fast Field Solvers software available at no cost. We complement our free software with high quality services, offering support, simulations, studies, training and customization consulting services. Our mission is to provide you comprehensive solutions, with great attention to your requests.
FasterCap Open Source code

Discover our Software. Fast. Accurate. Reliable.

Fully open, fast, accurate, reliable and free forever, no catches. Discover the gold standard.

With literally thousand of active FastFieldSolvers users in the University and in the Industry, we offer a high quality, free alternative to high-priced elecromagnetic software. And under very permissive licenses, both in source and binary format, for Windows and Linux, with no advertising, no in-app purchases. Discover our golden reference field solvers FasterCap, FastCap2 and FastHenry2. No black-box algorithms and claims of accuracy you should trust on word, without a real understanding of the limits of the tools you are using: the open source grants you full visibility in the algorithms implemented in the software, how they were implemented, and ultimately gives you the possibility to modify the code base and add your contribution; it also guarantees that there is no hidden spyware.
Fastercap run example

Your Advantage. Our experience.

We simulate, you fully focus on your core activities.

With more than 20 years of experience in the field of electromagnetics, we help you achieve your goals, without being distracted from your core activities by the need to develop a specific knowledge of electromagnetic tools and simulation quirks. We offer all the consulting services needed to provide ready-to-use results, from simulation output to full turn-key studies, allowing intelligent yet simple qualification by simulation. And should you need to go one step further, we can also customize and enhance our solvers to adapt them to your requirements.
IC Package model seen in FastModel