Here are promotional materials for the products in question, for people who would like to compare.
CircusPonies NoteBook Features
CircusPonies Notebook Video Tour
DevonThink Overview
DevonThink 2.0 New Features
What Makes DT Unique? (LinkRemoved)
OmniOutliner Overview
OmniOutliner Features
OmniOutliner Videos
OmniFocus Overview
OmniFocus Features
For mindmapping and flowcharting:
OmniGraffle.
Scrivener Overview
Scrivener Videos (LinkRemoved) (these really get the point across well)
Skim is the Open Source PDF reader that has created it's own add-on annotation and highlighting layer much better than the standard Adobe or PDFkit that lives in a separate .skim file. (So if you open the PDF in Acrobat or Preview or something that doesn't now about .skim files you don't see the annotation--but the API is open and other developers have been slowly adding support. DevonThink, for instance, apparently now has some basic support for it--although it displays the .skim notes separately unless you fire up the external viewer. )
Evernote videos (LinkRemoved)
and for those who aren't thrilled with Evernote features (or pricing), but want something similar, you might like Springpad.
Springpad Features (LinkRemoved)
If you want a lighter version of something like Springpad/Evernote you may want to look at
Simplenote. This is especially good if you just want to use it as an input sink/data dump for stuff you're going to put into another app.
Papers: your personal research library -- this is really more for science and medicine, etc, but is often mentioned in discussion of academic software and PDF management so I'm linking it.
Not yet mentioned, but worth looking at are the "everything organizers":
Yojimbo(from BareBones Software, makers of the famous BBEdit) -- "effortless, reliable information organizer for Mac OS X"
Bento (from FileMaker -- which I suppose must be the remnants of Claris).
I don't want to get into the reference/citation managers unless there's an interest as it seems they are not used in LS.
Personal wikis were also mentioned, which is a great idea, but discussion belongs in a cross-platform thread where others can make benefit glorious legal education.
This random blog entry from a tech lawyer I googled up mentions a lot of these, some might enjoy his perspective:
--LinkRemoved--
I'll quote what he says about my two favored apps:
2. DEVONthink Pro
I love DEVONthink Pro. This is the sort of software that can single-handedly draw Windows users over to the Mac. DEVONthink is many things to many people. For me, it is a powerful database/notes application with built-in keyword artificial intelligence that allows me to more quickly store and find information. I use it for two primary purposes: (1) I scan all of my personal paperwork, files, mail, etc. into a “scanned files” database using DEVONthink’s OCR feature and (2) I collect notes, articles, and other research in several career-related databases. For example, I have an intellectual property law database for cases, articles, and legal research. And I have a technology news database for tracking developments in the technology industry. The software offers some handy web clipping bookmarklets to aid your workflow.
When you’ve created a database and moved information into folders, that’s where DEVONthink’s artificial intelligence—its killer feature—kicks in. Not only can you quickly search your information but you can ask DEVONthink to suggest related notes and articles, and folders for filing related notes and articles; based on keyword analysis, it can accurately suggest related information. The new web clips bookmarlet feature, combined with the universal inbox takes DEVONthink to a new level of usefulness.
3. Scrivener
It’s not an overstatement to say that this is the future of writing. For any writing project that is long enough to require sections and an outline, you really should be using Scrivener. It lets you focus on the organization and the writing without getting bogged down in managing all the pieces. You can easily brainstorm with virtual index cards on a cork board and translate that directly into an outline. You can annotate your text and easily rearrange. When you’re ready to move to the editing and proof reading stage, you can export to the word processor of your choice. I used this to write a legal research article and it substantially reduced the time I spent getting to a first draft.
DevonThink can trigger the 'See Also' and 'Lookup' functions from highlighted text. So you can highlight a key rule element or holding phraseology and make the AI crawl through your whole database (which would ideally contain your notes, outlines and PDFs of all assigned cases and note cases, maybe even digitized supplements) to dredge up associations and connections--and then rank them by relevance. It's really pretty awesome. In UG and now at the office, as I worked I would dump any relevant or even interesting articles/cases I pulled as I researched into DT and after a while I could often find what I need for issues I was returning to within my own DB rather than needing to trawl jstor or Westlaw again.
And perhaps most powerfully, it can alert you to connections or overlap that you may not have perceived yet.