Afton Tickets - Afton Tickets is the perfect platform for event management and ticketing.
Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
Kangaroo Rewards - Maximize sales and customer engagement with Kangaroo Rewards' Customer Loyalty platform. An all-in-one marketing solution that empowers you to reward, communicate, and target your customers to drive growth and deliver a premium customer experience.
Anchor CMS - Free and lightweight blogging system
sitejabber - Check Ratings of Businesses, Read Reviews & Buy
Textpattern - Textpattern is an elegant content management system that is free, open source software.