The Eigenbase Project is a 501(c)(3) public charity. All donations are tax deductible, and are used to keep Eigenbase services running, as well as to further the project goals. The following donation options are available. If you need a receipt for tax purposes, please write to the PO box below, or [email protected], including the mailing address to which the receipt should be sent.


To donate using a credit card or PayPal account, click this button:

Suggested USD amounts are $20 to $50, but we appreciate smaller or larger ones too!

With Internet Explorer 7, it may be necessary to reduce the default privacy setting from Medium to Low, otherwise the button above will not work. We apologize for the inconvenience; if you do this, please remember to restore your privacy settings after donating. Firefox users do not need to change default settings; other browsers may vary. If you want to avoid changing your browser settings, use one of the other donation methods such as the Sourceforge Donation System.

US Mail

If you would like to make sure that all of your donation goes directly to Eigenbase without any PayPal fees being subtracted, please send a check to
The Eigenbase Project
PO Box 2184
El Granada, CA  94018

Sourceforge Donation System

This option goes through both Sourceforge and PayPal. Click here for the Sourceforge donations page and follow the instructions you find there. If you use this option, you will automatically get acknowledgement of your donation added to the project page.