Elevate - Elevate is an award-winning brain training tool designed to build communication and analytical skills.
Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
Peak - Peak is the automated way to keep track of what everyone is working on.
Mailman 3 - Dedicated Mailman 3 installation. Unlimited lists/configuration. Free subdomain at mailman3.com. Dedicated support for list admins.
Brain Workshop - Brain Workshop is a open-source version of the dual n-back brain training exercise.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.