Zeffy

Zeffy, Inc. (formerly Simplyk) operates a zero-fee fundraising platform for nonprofits, covering donations, ticketing, memberships, and volunteer sign-ups. Instead of charging transaction or platform fees, Zeffy is funded entirely by optional donor tips at checkout — a model that has reportedly saved nonprofits over $40 million in fees while helping them raise nearly $1 billion. While its mission is nonprofit-friendly, Zeffy, Inc. is a private, venture-capital-backed corporation, not a nonprofit itself.