Are there alternatives to OneNote?

After I destroyed what credibility I had left with the Open Source community last week, gushing over Office 2010 and, in particular, OneNote, a Mac user emailed me and asked if I knew of any cross-platform tools that were similar to OneNote. I figured it was worth taking a step back from my love of OneNote and poking around to see what I could find.

As it turns out, there are a lot of applications that work well across browsers or in the cloud for taking notes. Although none, in my opinion, work as well or as intuitively as OneNote, all of the applications listed below are either free and/or open source and will do the trick in many settings. In fact, if you're looking for a note-taking App, they're all worth a look. Just because OneNote works best with my little brain, others may find software devoted to mind-mapping or that follows more of a wiki format works better for their particular brains.

Type	Name	OS	Summary
Text/Freestyle	Jarnal	Windows, Mac, Linux (it works and looks best on Windows and Linux)	Supports mouse and touch pen input/hand drawings Supports multiple pages Looks and feels like a "notebook", lined paper and all
	The Note Taking Tool	Windows, Mac, Linux	Still in alpha Mac application would not open
	Evernote	Windows, Mac, and iPad/iPod	Cloud sync Rich, notebook-style interface Easy integration with web browsers to clip links and pages Check boxes, to-dos, etc. Easy attachments of images (even from a webcam) and PDFs
Mind-Mapping	FreeMind	Windows, Mac OS X, Linux	Cross-platform Relatively easy to learn Powerful graphic organizer, but must have a file for every idea (i.e., no tabs or subdivisions) No cloud sync
	Compendium	Windows, Mac OS X, Linux	Based upon Freemind, but with significantly expanded collaboration capabilities and a steeper learning curve
	Freeplane	Windows, Mac OS X, Linux	A fork of Freemind that can run from a USB stick
	XMind	Windows, Mac OS X, Linux	Allows audio nodes in its maps Social brainstorming via XMind online account and mind map uploads Integrated web browser Workbook with multiple sheets and outline view If I had to pick a free OneNote replacement, this would be the one
	VUE	Windows, Mac OS X, Linux	Powerful graphical interface Developed by Tufts University to support teaching and learning Tabbed interface Relatively steep learning curve
Wiki-style	Wikidpad (this is a link to the Windows installer as other links appear to be broken)	Cross-platform, but requires extensive setup outside Windows	Familiar wiki-style interface A lot of embedded functionality Steep learning curve
	ZuluPad	Windows and Mac OS X	Cloud sync Very simple, easy to navigate interface Missing many features of the other products here This is just notes, typed into what amounts to a well-organized, pretty Notepad

OneNote will remain my notetaking/life organization/brainstorming/thought-catcher application of choice, but I can get cheap academic licenses. Would I feel the same if I had to pay full retail? That might be a little tougher sell since the applications above, particularly Evernote and XMind, have a lot of value and achieve many of the same functions (as well as some new functions). However, I think that for most cases where I wasn't actively looking at a specific mind-mapping tool, OneNote, even at full retail, would still be the one for me. Evernote is a close second and I'll spend some more time with it for a more thorough comparison. Let me know if I've missed any important pieces of free software that should be included in the list.