Bike 1.12
Bike Outliner adds inline navigation buttons so you can zoom through your outline with just your mouse. It also adds a navigation bar with back and forward history and breadcrumbs.
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New inline navigation buttons are added after rows with children. Use them to zoom through your outline with just your mouse. They are a nice visual indicator of where you are and where you can go.
I don’t think I’ve seen an outliner that does focus/hoist this way before.
Previously:
Workflowy comes to mind.