Seald - Keep your conversations secure, everywhere.
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Crypho - End-to-end-encrypted messaging and file sharing
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.
Plivo - Plivo simplifies your customer engagement.