Priority-Zero is described as 'All-in-one tool for freelancers and teams, combining project and workload planning, time tracking, billing, quotes, team collaboration, file sharing, and real-time reporting' and is a project management tool in the office & productivity category. There are eight alternatives to Priority-Zero for a variety of platforms, including Web-based, Windows, Mac, iPhone and Android Tablet apps. The best Priority-Zero alternative is La Suite Docs, which is both free and Open Source. Other great apps like Priority-Zero are JIRA, Wrike, Walling and Microsoft Project.