SubItUp is described as 'offers online software-as-a-service tools for scheduling shift-based employees' and is an website in the Office & Productivity category. There are three alternatives to SubItUp, not only websites but also apps for iPad and iPhone. The best alternative is Malinko CRM, which is free. Other great sites and apps similar to SubItUp are Hopscot (Paid) and Shiftboard (Paid).
Cost effective software for even the smallest business; with three integrated elements: CRM system, appointment scheduling, & customised reporting. User-defined fields so you record what you need in order to run your business your way.
Hopscot Calendar. Make schedules, connect people. Manage your contacts and their events. Enjoy planning on a compact one-screen page. The main point of our app is to pay attention to both people and their events equally.