Onesheet CRM - The Simple CRM for Google Sheets
Vtenext - Vtenext is a platform that allows you to tackle CRM processes and customers with great ease.
HubSpot - Grow Better With HubSpot: Software that's powerful, not overpowering. Seamlessly connect your data, teams, and customers on one CRM platform that grows with your business.
Teamgate CRM - Powerful CRM without the Salesforce Price tag.
GetStream.io - APIs for the development of scalable newsfeeds and chat applications.
ZEKI CRM - ZEKI CRM is a full-fledged and multi-features solution that enables businesses to fulfill all their needs in a single place.