I created a few nice looking websites with the free version of RocketCake - it it very easy to use and simply gets out of the way. It has all the options I need and you can create complicated stuff with mostly a few clicks.
Webflow - Build dynamic, responsive websites in your browser. Launch with a click. Or export your squeaky-clean code to host wherever you'd like. Discover the professional website builder made for designers.
Bloomerang - Bloomerang is a simple donor database and fundraising software solution that helps nonprofits decrease donor attrition and increase revenue.
WiX - Create a free website with Wix.com. Customize with Wix' website builder, no coding skills needed. Choose a design, begin customizing and be online today
DonorPerfect - Nonprofits use DonorPerfect Fundraising Software for their Donor Management, Grant & Gift Tracking, Moves Management, Mass Mailing needs and more.
Grapedrop - Build free, responsive, website pages with an easy to use online builder. Design and publish online immediately or export the code and host it wherever you want
Qgiv - Qgiv offers web based fundraising solutions for nonprofit organizations.