HubSpot CRM - Free CRM software for small businesses.
ThingSpeak - Open source data platform for the Internet of Things. ThingSpeak Features
Less Annoying CRM - A simple customer relationship manager made just for small businesses. Manage contact info, track leads, and never miss a follow-up.
Countly - Product Analytics and Innovation. Build better customer journeys.
Keap - Grow Sales. Save Time. Get Organized.
AWS IoT Analytics - IoT Management