HubSpot - Grow Better With HubSpot: Software that's powerful, not overpowering. Seamlessly connect your data, teams, and customers on one CRM platform that grows with your business.
Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.
Marketo - Marketo's powerful marketing automation software helps marketers master the art & science of digital marketing to engage customers and prospects.
Strikethru - Strikethru is a kind of to-do list notebook for managing work lists and staying updated with the important tasks.