Consider an application called "OpenTasks". "OpenTasks" has a feature to share a task with another person.
Now Alice shares a task with Bob.
What's the right preposition in the following expression?
The task has been shared by Alice with Bob ??? OpenTasks.
Or in short:
The task has been shared ??? OpenTasks.
I've tried "with" and "from" but neither of them sound quite right to me.