CharityStack is a fundraising software platform for growing nonprofits and charities, bringing donation tools, donor records, and outreach together in one system. Organizations can create fundraising forms with giving levels and recurring options, launch event forms with ticketing and attendee details, and add web elements such as embedded forms, overlays, fundraising bars, supporter lists, and QR codes. Its checkout supports Apple Pay, Google Pay, credit cards, and bank transfers. Teams can manage operations through an admin dashboard, while donors can use a portal to access receipts and recurring gifts.

CharityStack also offers a fundraising assistant that lets teams ask questions and create forms, contacts, and payments by chat. Marketing tools support email and SMS broadcasts based on donation data. The platform connects gifts with contacts, subscriptions, receipts, outreach, and payouts to help organizations understand donor relationships and follow up effectively. CharityStack says its core tools are free for nonprofits, with no monthly or platform fee; it also covers processing fees when donors do not.