I came around building this new take on an outliner for the Mac with the frustration of OmniOutliner becoming too bloated and most other solutions being based too heavily on the paradigm of text editors. OutlineEdit tries to keep in focus what's most important when sketching thoughts: constantly adding, reshuffling and organising without effort. It comes with some handy features like color coded category tags, marking text in Safari for import and pinned outlines in Today View. Also, it's free today on the Mac App Store!

Let me know your thoughts