Houdini

What Houdini is

Houdini is free, open-source fundraising infrastructure for nonprofits and NGOs, available as a self-hosted Rails application. It provides crowdfunding campaigns, fundraising events, a donation widget page and generator, and donor management. Nonprofit dashboards cover payment history, payouts, recurring donations, metrics, supporter relationships in a CRM, and organizational user accounts. Campaign reporting is described as advanced. Payment processing is separate, and configuring it requires Stripe API keys. Production deployment instructions cover Linux servers using SystemD and Nginx. Supported operating systems include Ubuntu 18.04, 20.04, 22.04, or equivalent; setup prerequisites include Node.js 16, Yarn, PostgreSQL 12 (PostgreSQL 10 may work), and Ruby 2.7. Building JavaScript assets requires about 3 GB of free RAM, and the deployment guide suggests a server with at least 4 GB RAM. The project describes its latest version as pre-2.0 and in heavy development, and suggests using v1 instead. GitHub Discussions is available for project conversations.