MailStore - MailStore Home - A 100% free single-private-user desktop solution
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
MailSteward - MailSteward : The Ultimate E-mail Manager for Mac OS X
Process Street - Create beautiful rich process documents in a simple to follow checklist format. Fast, free and incredibly simple to use.
Gmvault - Backup the emails in your Gmail account.
Pipefy - Pipefy is a process management software that empowers anyone to create and automate efficient workflows on their own without code.