Planisware Orchestra - Planisware Orchestra is a best-in-class project portfolio management software and solution, providing an agile approach to bring all the stakeholders on the same page.
Horde - Horde Groupware is a free, enterprise ready, browser based collaboration suite.
The Hit List - Your life is complicated, but managing it doesnt need to be.
Roundcube - Web-based IMAP email client
Todo.ly - Todo.ly is an intuitive and easy to use online Todo list, and Task Manager. It helps you to get organized, simplify your life, and to get things done. Create todo lists, and manage them online from anywhere.
Mailo - Mailo is an email client where you can send and receive emails to and from anyone with an email address.