Acompli - iPhone email just got a promotion
Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.
Send - Instant messaging meets email (by Microsoft)
Seald - Keep your conversations secure, everywhere.
Brosix Instant Messenger - Secure instant messenger for your team
ProtonMail - Secure email with absolutely no compromises. Get your free encrypted email account today.