Depending on your platform, you might have discovered a great outliner, one that helps you define issues, determine solutions, and communicate them to others. For web-based work, we’ve come to love Workflowy…
If you can see a browser, you can use Workflowy. Plus there’s a great app for iOS too. AND, for web-based work, it works offline (as long as you have it open before your flight). The iOS app is ALWAYS available (offline or online).
As far as other apps go, don’t over look
https://www.omnigroup.com/omnioutliner
It’s highly-recommended by its users. (Thanks Ed!)
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