HubSpot CRM - Free CRM software for small businesses.
Sendlane - Marketing automation and campaign management solution
Less Annoying CRM - A simple customer relationship manager made just for small businesses. Manage contact info, track leads, and never miss a follow-up.
CS-Cart Multi-Vendor - On-premises eCommerce marketplace builder
Keap - Grow Sales. Save Time. Get Organized.
SmartEngage - Cross-channel autoresponder for marketing automation