Apps similar to NeO include OmniOutliner. It's paid, but Orgzly and Zavala are free. Other options are Visual Outliner, OutlineEdit, Dashword and Tinderbox. In total there are seven Note-taking Tools like NeO for Mac, Windows, iPhone, iPad and Android.
OmniOutliner is a start-to-finish writing app. Perfect for collecting information, outlining Big Ideas, adding structure to any sort of writing, and much more. From grocery lists to email drafts to long-form composition.
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You can keep notebooks stored in plain-text and have them synchronized with a directory on your mobile device, SD card, Dropbox, or over WebDAV.
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Zavala is a modern take on a traditional outliner. It supports all the things you want in a Mac app like multiple windows, keyboard shortcuts, a customizable toolbar, and a full menu bar.
Visual Outliner is an outliner software for Windows, and it uses OPML as native file format. It's not just another tasklist application, but a real outliner editor that can be used to write, view, modify, and maintain hierarchically arranged text.
The beautifully crafted outliner for your Mac. Keep ideas structured and collected every day.
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Dashword is by far the most convenient and user-friendly tool for creating any semantic network, be it your business idea, an abstract of a lecture on computer science, a script for a movie or a recipe for your favorite dish.
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Tinderbox is a personal content assistant that helps you visualize, analyze, and share your notes.
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