Zeffy is a 100-percent-free fundraising platform for nonprofits, schools, and charitable organizations that lets them collect donations, sell tickets, run peer-to-peer campaigns, and manage donor records without paying transaction fees because the platform is funded by optional donor tips. Marketed as a free fundraising platform for nonprofits, Zeffy combines no-fee donation forms, peer-to-peer fundraising pages, ticketed events, recurring donations, branded donor receipts, donor relationship management, integrations with Mailchimp and Salesforce Nonprofit Cloud, and a mobile app. Zeffy is a strong fit for small nonprofits replacing Donorbox or Givebutter, school PTAs running annual campaigns, and faith-based organizations collecting tithes without fee deductions.