Darcs is a volunteer-run free-software project that is a member of the Software Freedom Conservancy, a US tax-exempt 501(c)(3) organization.
Checks should be made payable to "Software Freedom Conservancy, Inc.", with "Directed donation: Darcs" in the memo. They can be mailed to
Software Freedom ConservancyIf you wish to send a donation by wire transfer, please contact conservancy@softwarefreedom.org