The FileCloud server is self-hosted and gives me the ability to store and share files, sync across different devices and back-up all documents and photos so that I don't have to worry about security.
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
MailStore - MailStore Home - A 100% free single-private-user desktop solution
Air Explorer - Air Explorer is a software to manage all your multiple cloud drives (like Dropbox, Onedrive, Google Drive, Mega, Mediafire, Box, Hidrive, Yandex, Baidu,...) as well as WebDav and FTP connections.
MailSteward - MailSteward : The Ultimate E-mail Manager for Mac OS X
ExpanDrive - ExpanDrive is a fast network drive and browser for cloud storage.
Gmvault - Backup the emails in your Gmail account.