WordPress - WordPress is web software you can use to create a beautiful website or blog. We like to say that WordPress is both free and priceless at the same time.
CoSchedule - CoSchedule is the #1 marketing calendar that helps you stay organized and get sh*t done. Plan, produce, publish and promote your content.
ApostropheCMS - Apostrophe is a powerful website builder platform built on an enterprise open source CMS, offering in-context live editing, visual design tools, and multisite enablement in a full stack JS environment.
Embedly - Embedly helps publishers and consumers manage embed codes from websites and APIs.
Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
Rocketium - A DIY video creation platform. Make videos in minutes using preset themes and templates.