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.
Axonize - Axonize IoT platform - the smarter way to truly realize your IoT potential and create smart, scalable IoT projects to increase profitability.
Keap - Grow Sales. Save Time. Get Organized.
Countly - Product Analytics and Innovation. Build better customer journeys.