ONLYOFFICE - ONLYOFFICE is a complete office and productivity suite.
hMail Server - hMailServer is a free e-mail server for Microsoft Windows.
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
ProtonMail - Secure email with absolutely no compromises. Get your free encrypted email account today.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!