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.
Price2Spy - Price2Spy is a price monitoring, pricing analytics, and repricing tool, meant to help eCommerce professionals keep an eye on their competitors or retailers.
mailcow - An open source mailserver suite.
Skuuudle - Discover, match and monitor your eCommerce competitors.
Roundcube - Web-based IMAP email client
Prisync - Prisync is a competitor price tracking and monitoring software for all sizes of e-commerce companies worldwide.