HubSpot CRM - Free CRM software for small businesses.
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
Less Annoying CRM - A simple customer relationship manager made just for small businesses. Manage contact info, track leads, and never miss a follow-up.
Pipefy - Pipefy is a process management software that empowers anyone to create and automate efficient workflows on their own without code.
Bexio - Bexio helps small businesses manage their accounting, contacts and inventory.
Process Street - Create beautiful rich process documents in a simple to follow checklist format. Fast, free and incredibly simple to use.