Buffalo Go Framework - A Go web development eco-system, designed to make your life easier.

Bloomerang - Bloomerang is a simple donor database and fundraising software solution that helps nonprofits decrease donor attrition and increase revenue.

MarsEdit - MarsEdit is a desktop blog editing application for the Mac. It provides an offline interface to most popular blogging systems. WordPress, Blogger, Tumblr, Movable Type, and many other systems are supported.

Kindful - Nonprofit donor database + fundraising tools all in one

Yak - Effortless Dropbox blogs

Classy - Expressive, flexible, and powerful stylesheets for native iOS apps