Best CRM Nonprofit Software for Managing Donors, Volunteers & Reports in 2025?

[Krayin CRM]

We're a growing nonprofit and looking to switch from spreadsheets to a more organized system. Our team needs a CRM for nonprofits that can manage donor information, track volunteer activities, and help with campaign reporting.

We’ve been exploring a few options and came across Krayin CRM—an open-source, customizable CRM nonprofit software. Has anyone here used it or similar tools?
Would love real-world feedback on setup, integrations, and ongoing use. What are your must-have features in a nonprofit CRM today?