HubSpot CRM - Free CRM software for small businesses.
Rivery.io - Rivery is a web-based development platform that is used to manage, create, control, and monitor a large number of data pipelines.
Less Annoying CRM - A simple customer relationship manager made just for small businesses. Manage contact info, track leads, and never miss a follow-up.
RapidClipse - RapidClipse is a web-based development platform that allows you to build the app with Java and provides you with a hustle-free configuration.
Keap - Grow Sales. Save Time. Get Organized.
Decision.io - Decision.io is an interesting platform that provides you the simple features to develop the app or an integrated workflow without using any program language or code.