Maybe you don't know this but Apple has a donation-matching program. If you make donations to non-profits through some special internal mechanism, the company will send a donation of equal value (up to some limit). If I recall correctly the limit is 30K USD per person.
Any non-profit, or just charitable non-profits (aka 501(c)(3))? Unfortunately, the US does not consider producing open source software to be charitable activity.
Do you have any links or more info about the special internal mechanism? Would need an apple employee to initiate this I assume?