Houseparty - Brining empathy to online communication.
Horde - Horde Groupware is a free, enterprise ready, browser based collaboration suite.
Booyah - Video chat with up to 12 friends at the same time.
Roundcube - Web-based IMAP email client
Airtime - Hang out with group video, share music & videos
ProtonMail - Secure email with absolutely no compromises. Get your free encrypted email account today.