Mint - Free personal finance software to assist you to manage your money, financial planning, and budget planning tools. Achieve your financial goals with Mint.
iRedMail - A fully fledged, free email server solution, an open source project (GPL v2).
Spendee - See where your money goes
Postfix - Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail.
YouNeedABudget - Personal home budget software built with Four Simple Rules to help you quickly gain control of your money, get out of debt, and reach your financial goals!
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.