Castlamp is a software development company known for creating Zenbership, a free and open-source membership management software designed to help organizations efficiently manage their memberships, events, and communications. Zenbership specifically targets non-profits, clubs, and associations, offering a suite of tools that includes a built-in CRM, event management capabilities, a customizable database, and e-commerce integration. This platform enables organizers to handle member subscriptions, dues, and event registrations, allowing for seamless administration and communication. Originally conceived to bridge the gap in the market for comprehensive yet adaptable membership management solutions, Zenbership by Castlamp provides its users with a powerful, user-friendly system that can be tailored to meet the intricate requirements of any membership-based organization.