amoCRM is the world's first messaging-powered CRM. Multi-channel communication lets you converse through messengers, emails, and calls from a single app. Now every interaction with your customers can be a personalized one-on-one dialogue. Plus managers love its powerful analytics, reporting, and automation tools. It's the perfect messenger-based sales solution for entrepreneurs and SMBs.
Pipedrive - Sales pipeline software that gets you organized. Helps you focus on the right deals, so easy to use that salespeople just love it. Great for small teams.
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
HubSpot CRM - Free CRM software for small businesses.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Keap - Grow Sales. Save Time. Get Organized.
Plivo - Plivo simplifies your customer engagement.