On Buzzstream you can create team projects and assign tasks to certain team members. You can also create calender to do items as well as create reminders.

Streamlines the outreach process. Easy to set up outreach campaigns Easy to create and use templates and edit template draft

I like how influential it has been in improving on the PR for my company. You can easily store contacts and segment them for different groups. It is also very user friendly and intuitive. The chrome extension has also been a great bonus as well.