If you would like a tool to manage your small business activities and Projects, you can use this web aplication:

www.Gtdagenda.com

You can use it to manage and prioritize your Goals (for business but also in other areas of your life), Projects and Tasks. It has a Checklists section, for the routines and repetitive activities that any business has to do. Also, it features a Schedules section and a Calendar, for scheduling you time and activities.

Some features from GTD are also present, like Contexts and Next Actions.

And it's available on the mobile phone too, so you can access it from anywhere.