Img.vision - Image hosting & video hosting for eCommerce sellers
iRedMail - A fully fledged, free email server solution, an open source project (GPL v2).
UploadHouse - Thumbnail and resize your photos and images
Zimbra - Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.
ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.
mailcow - An open source mailserver suite.