DonatePal - The new way to donate to charities
Every.org - Give to any charity with friends - the easiest way to give!
Mining 4 Charity - Turn hashpower into good deeds
Donate in Crypto - Make a donation in crypto to a nonprofit
Donation Spring - Embeddable, highly-configurable, and secure donation widget.
Involve - Get behind-the-scenes access to your favorite nonprofits