Thank you for your interest in FeynCalc. FeynCalc is free and noncommercial software. The development is done by volunteers working on FeynCalc in their spare time. Any funds you're able to donate are greatly appreciated.

Your support will help By clicking on the button below you will be taken to the secure payment service of PayPal.
We suggest an amount of 25 Euros, but any amount is welcome and appreciated.