When comparing Omnifocus vs Quire, the Slant community recommends Quire for most people. In the question“What are the best cross-platform task apps?” Quire is ranked 42nd while Omnifocus is ranked 63rd. The most important reason people chose Quire is:
A free version is available for up to 10 members.
Specs
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Pros
Pro Defer date
Omnifocus allows users to setup the "defer date" which can be treated as "start date". Tasks will not be marked as available until that date, which should help to focus on the "available" task only.
Pro Forecast summary
The forecast summary shows a quick digest of the tasks you have for the day. You can select any day to quickly see what tasks you have planned that day. For extra functionality you can connect with the iPhone’s Calender app, which allows you to also see any other events you have planned that day.
Pro See an overview of all tasks via "Perspective"
The Perspective section allows you to see an overview of the tasks you have set. It also allows you to set contexts or see things you have flagged.
Pro Nearby and context-sensitive tasks
OmniFocus 2 allows you to set up contexts for tasks in certain areas. This makes sure you never miss a task when you're out running errands and happen to be near something you need to do.
Pro Free version
A free version is available for up to 10 members.
Pro Cross platform, sync and offline usage
Pro Organizations, projects, task, hierarchical subtask and smart folders
Unlimited tasks/todo structures.
Pro Multi-user handling
Handle multiple users and assignments .
Pro Integration with calendar and github
Cons
Con Mac and iOS only
Omnifocus doesn’t work on non-Apple platforms.