Buy For Life - Find the most durable and sustainable products in the world
Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
Median - View your users' screens from Intercom, LiveChat and more!
Textpattern - Textpattern is an elegant content management system that is free, open source software.
Greenlist - Start a sustainable company lifestyle, on Slack
TYPO3 - TYPO3.com - Infos, SLAs, Extended Support Versions and more