Oddly compelling little file tagging application. Spotlight comments for tag storage (but in a grossly unreadable format). Good UI for retrieval, not so good for storage. Can manage files on disk and work with WebKit browser bookmarks.

"...a MacFUSE file system that creates true smart folders, where the folders' contents are dynamically generated by querying Spotlight. ... Since SpotlightFS smart folders are true folders, they can be used from anywhere--including the command line."

...or these.

...so (theoretically) you can mount any of these file systems on a Mac.

Holy crap, a little more on this later. [1] BSD licensed [2] FUSE implementation for [3] OS X, wow wow wow

"muCommander is a lightweight, cross-platform file manager featuring a Norton Commander style interface and running on any operating system with Java support (Mac OS X, Windows, Solaris, Linux, *BSD, OS/2...)."

HFS+, ZFS, other?

Very weird file browser.

About the preference list Mac apps get their environment variables from.

"Observes filesystem changes using the same underlying API as Spotlight. Provides a graphical representation of the file activity."

But it's a bulky, crash-prone mess.

"Collection of 50+ free file hosting from 10MB to 2GB that do not require registration, with detailed of file size limit, download limit and file life." I'm not sure why I would ever use these, but bookmarks are cheap.

Spotlight importer for your LyX documents! The future and the past, the closed and the open all merge in a luminous moment here, folks.

Linux virtual filesystem for flickr.

"...is a Python wrapper for Darwin and Linux extended filesystem attributes"

"is a program that lets you access a shared, world-wide file system through your web browser."